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List of nearest terrestrial exoplanet candidates: Difference between revisions

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{| class="wikitable sortable" style="text-align:center"
{| class="wikitable sortable" style="text-align:center"
! |'''Name'''
! |'''Name'''
! class="unsortable" |''' Image (artist's concept) '''
! |'''{{abbr|M<sub>⊕</sub>|Mass (in Earth masses)}}'''
! |'''{{abbr|M<sub>⊕</sub>|Mass (in Earth masses)}}'''
! |'''{{abbr|R<sub>⊕</sub>|Radius (in Earth radii)}}'''
! |'''{{abbr|R<sub>⊕</sub>|Radius (in Earth radii)}}'''
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! |'''{{abbr|D|Distance from the Sun in lightyears}}'''
! |'''{{abbr|D|Distance from the Sun in lightyears}}'''
|-
|-
| [[Proxima Centauri b]]||[[File:Artist’s impression of Proxima Centauri b shown hypothetically as an arid rocky super-earth.jpg|200px|center]]||≥1.27 || ~1.1|| || {{free|234 K <br/>-39°C}} || 0.05||<0.35 || <ref name="nature_paper">{{cite journal|last1=Anglada-Escudé|first1=Guillem|last2=Amado|first2=Pedro J.|last3=Barnes|first3=John|last4=Berdiñas|first4=Zaira M.|last5=Butler|first5=R. Paul|last6=Coleman|first6=Gavin A. L.|last7=de la Cueva|first7=Ignacio|last8=Dreizler|first8=Stefan|last9=Endl|first9=Michael|last10=Giesers|first10=Benjamin|last11=Jeffers|first11=Sandra V.|last12=Jenkins|first12=James S.|last13=Jones|first13=Hugh R. A.|last14=Kiraga|first14=Marcin|last15=Kürster|first15=Martin|last16=López-González|first16=Marίa J.|last17=Marvin|first17=Christopher J.|last18=Morales|first18=Nicolás|last19=Morin|first19=Julien|last20=Nelson|first20=Richard P.|last21=Ortiz|first21=José L.|last22=Ofir|first22=Aviv|last23=Paardekooper|first23=Sijme-Jan|last24=Reiners|first24=Ansgar|last25=Rodríguez|first25=Eloy|last26=Rodrίguez-López|first26=Cristina|last27=Sarmiento|first27=Luis F.|last28=Strachan|first28=John P.|last29=Tsapras|first29=Yiannis|last30=Tuomi|first30=Mikko|last31=Zechmeister|first31=Mathias|title=A terrestrial planet candidate in a temperate orbit around Proxima Centauri|journal=Nature|date=25 August 2016|volume=536|issue=7617|pages=437–440|arxiv=1609.03449 |doi=10.1038/nature19106|language=en|issn=0028-0836|pmid=27558064|bibcode = 2016Natur.536..437A }}</ref>||4.22
| [[Proxima Centauri b]]|| ≥1.27 || ~1.1|| || {{free|234 K <br/>-39°C}} || 0.05||<0.35 || <ref name="nature_paper">{{cite journal|last1=Anglada-Escudé|first1=Guillem|last2=Amado|first2=Pedro J.|last3=Barnes|first3=John|last4=Berdiñas|first4=Zaira M.|last5=Butler|first5=R. Paul|last6=Coleman|first6=Gavin A. L.|last7=de la Cueva|first7=Ignacio|last8=Dreizler|first8=Stefan|last9=Endl|first9=Michael|last10=Giesers|first10=Benjamin|last11=Jeffers|first11=Sandra V.|last12=Jenkins|first12=James S.|last13=Jones|first13=Hugh R. A.|last14=Kiraga|first14=Marcin|last15=Kürster|first15=Martin|last16=López-González|first16=Marίa J.|last17=Marvin|first17=Christopher J.|last18=Morales|first18=Nicolás|last19=Morin|first19=Julien|last20=Nelson|first20=Richard P.|last21=Ortiz|first21=José L.|last22=Ofir|first22=Aviv|last23=Paardekooper|first23=Sijme-Jan|last24=Reiners|first24=Ansgar|last25=Rodríguez|first25=Eloy|last26=Rodrίguez-López|first26=Cristina|last27=Sarmiento|first27=Luis F.|last28=Strachan|first28=John P.|last29=Tsapras|first29=Yiannis|last30=Tuomi|first30=Mikko|last31=Zechmeister|first31=Mathias|title=A terrestrial planet candidate in a temperate orbit around Proxima Centauri|journal=Nature|date=25 August 2016|volume=536|issue=7617|pages=437–440|arxiv=1609.03449 |doi=10.1038/nature19106|language=en|issn=0028-0836|pmid=27558064|bibcode = 2016Natur.536..437A }}</ref>||4.22
|-
|-
| [[Proxima Centauri c]]||||~7 || || || {{free|39 K<br/>-234&nbsp;°C}}<ref name="ProximaCSource1">{{cite news |last1=Wall |first1=Mike |date=12 April 2019 |title=Possible 2nd Planet Spotted Around Proxima Centauri |url=https://www.space.com/proxima-centauri-possible-second-exoplanet.html |website=Space.com |access-date=22 July 2020}}</ref> || ~1.489||~0.04 || ||4.22
| [[Proxima Centauri c]]||~7 || || || {{free|39 K<br/>-234&nbsp;°C}}<ref name="ProximaCSource1">{{cite news |last1=Wall |first1=Mike |date=12 April 2019 |title=Possible 2nd Planet Spotted Around Proxima Centauri |url=https://www.space.com/proxima-centauri-possible-second-exoplanet.html |website=Space.com |access-date=22 July 2020}}</ref> || ~1.489||~0.04 || ||4.22
|-
|-
| [[Barnard's Star b]]||[[File:GJ 699b.jpg|200px|center]]||≥3.23|||| || {{free|105 K<br/>-168.15&nbsp;°C}} || 0.404 || 0.32 ||<ref name="Barnard">https://www.eso.org/public/archives/releases/sciencepapers/eso1837/eso1837a.pdf</ref>||5.958
| [[Barnard's Star b]]||≥3.23|||| || {{free|105 K<br/>-168.15&nbsp;°C}} || 0.404 || 0.32 ||<ref name="Barnard">https://www.eso.org/public/archives/releases/sciencepapers/eso1837/eso1837a.pdf</ref>||5.958
|-
|-
| [[Ross 128 b]]||[[File:Artist's impression of the planet Ross 128 b.jpg|200px|center]]||≥1.40|||||| {{free|213–301 K<br/>}} || || || ||11.03
| [[Ross 128 b]]||≥1.40|||||| {{free|213–301 K<br/>}} || || || ||11.03
|-
|-
| [[Luyten b]]|| ||≥2.89||≥1.35|| || {{free|259 K<br/>-14&nbsp;°C}}|| 0.091 || 0.10 || ||12.20
| [[Luyten b]]|| ≥2.89||≥1.35|| || {{free|259 K<br/>-14&nbsp;°C}}|| 0.091 || 0.10 || ||12.20
|-
|-
| [[Wolf 1061b]]|| ||≥1.36||≥1.44|| || || || || ||13.8
| [[Wolf 1061b]]|| ≥1.36||≥1.44|| || || || || ||13.8
|-
|-
| [[Wolf 1061c]]|| ||≥4.3||≥1.64|| || || || ||<ref name="ReferenceA">http://phl.upr.edu/projects/habitable-exoplanets-catalog/data</ref> ||13.8
| [[Wolf 1061c]]|| ≥4.3||≥1.64|| || || || ||<ref name="ReferenceA">http://phl.upr.edu/projects/habitable-exoplanets-catalog/data</ref> ||13.8
|-
|-
| [[Wolf 1061d]]|| ||≥5.21||≥2.04|| || || || || ||13.8
| [[Wolf 1061d]]|| ≥5.21||≥2.04|| || || || || ||13.8
|-
|-
| [[Gliese 876 d]]<ref>{{cite journal | title=Oligarchic and giant impact growth of terrestrial planets in the presence of gas giant planet migration | url=http://www.aanda.org/articles/aa/full/2005/38/aa3453-05/aa3453-05.html | last1=Fogg | first1=M. J. | last2=Nelson | first2=R. P. | journal=Astronomy and Astrophysics | date=2005 | volume=441 | issue=2 | pages=791–806 | doi=10.1051/0004-6361:20053453 | bibcode=2005A&A...441..791F | arxiv=astro-ph/0507180 }}</ref>||[[File:Artist’s view of an exoplanet inspired by the discovery of Gliese 876 d.jpg|200px]]||6.8|| || ||{{bad|650 K<br/>377&nbsp;°C}}<ref>{{cite journal | last1 = Rivera | first1 = E. |display-authors=etal | year = 2005 | title = A ~7.5 M⊕ Planet Orbiting the Nearby Star, GJ 876 | journal = The Astrophysical Journal | volume = 634 | issue = 1| pages = 625–640 | doi=10.1086/491669 | bibcode=2005ApJ...634..625R|arxiv = astro-ph/0510508 }}</ref> || 0.021||0.21||<ref>Eugenio J. Rivera, Gregory Laughlin, R. Paul Butler, Steven S. Vogt, Nader Haghighipour, Stefano Meschiari (2010). "The Lick-Carnegie Exoplanet Survey: A Uranus-mass Fourth Planet for GJ 876 in an Extrasolar Laplace Configuration".</ref>||15
| [[Gliese 876 d]]<ref>{{cite journal | title=Oligarchic and giant impact growth of terrestrial planets in the presence of gas giant planet migration | url=http://www.aanda.org/articles/aa/full/2005/38/aa3453-05/aa3453-05.html | last1=Fogg | first1=M. J. | last2=Nelson | first2=R. P. | journal=Astronomy and Astrophysics | date=2005 | volume=441 | issue=2 | pages=791–806 | doi=10.1051/0004-6361:20053453 | bibcode=2005A&A...441..791F | arxiv=astro-ph/0507180 }}</ref>
||6.8|| || ||{{bad|650 K<br/>377&nbsp;°C}}<ref>{{cite journal | last1 = Rivera | first1 = E. |display-authors=etal | year = 2005 | title = A ~7.5 M⊕ Planet Orbiting the Nearby Star, GJ 876 | journal = The Astrophysical Journal | volume = 634 | issue = 1| pages = 625–640 | doi=10.1086/491669 | bibcode=2005ApJ...634..625R|arxiv = astro-ph/0510508 }}</ref> || 0.021||0.21||<ref>Eugenio J. Rivera, Gregory Laughlin, R. Paul Butler, Steven S. Vogt, Nader Haghighipour, Stefano Meschiari (2010). "The Lick-Carnegie Exoplanet Survey: A Uranus-mass Fourth Planet for GJ 876 in an Extrasolar Laplace Configuration".</ref>||15
|-
|-
| [[Gliese 682|Gliese 682 b]]|| ||≥2 || || || || || ||<ref name="arxiv.org"/><br/><ref>http://www.hpcf.upr.edu/~abel/phl/tuomi/hec_orbit_GJ_682_b.png</ref><br/><ref name="ReferenceA"/> ||16
| [[Gliese 682|Gliese 682 b]]|| ≥2 || || || || || ||<ref name="arxiv.org"/><br/><ref>http://www.hpcf.upr.edu/~abel/phl/tuomi/hec_orbit_GJ_682_b.png</ref><br/><ref name="ReferenceA"/> ||16
|-
|-
| [[Gliese 832 c]]||[[File:Artist’s impression of a cloud-covered planet inspired by the data of Gliese 832 c.png|200px]] ||≥5.4 || || || {{won|251 K<br>-22 °C}}
| [[Gliese 832 c]]||≥5.4 || || || {{won|251 K<br>-22 °C}}
|| 0.162 || 0.03 || <ref name="phl.upr.edu"/><ref>{{cite web|url=http://phl.upr.edu/press-releases/gliese832|title=A Nearby Super-Earth with the Right Temperature but Extreme Seasons - Planetary Habitability Laboratory @ UPR Arecibo|access-date=3 October 2015}}</ref>||16.16
|| 0.162 || 0.03 || <ref name="phl.upr.edu"/><ref>{{cite web|url=http://phl.upr.edu/press-releases/gliese832|title=A Nearby Super-Earth with the Right Temperature but Extreme Seasons - Planetary Habitability Laboratory @ UPR Arecibo|access-date=3 October 2015}}</ref>||16.16
|-
|-
| [[82 G. Eridani b]]|| || ≥2.7 || || || {{bad|660 K<br/> 387&nbsp;°C<ref name="aaa534"/> }} || 0.1207 || 0||<ref name=epe_HD_20794/>||19.71
| [[82 G. Eridani b]]|| ≥2.7 || || || {{bad|660 K<br/> 387&nbsp;°C<ref name="aaa534"/> }} || 0.1207 || 0||<ref name=epe_HD_20794/>||19.71
|-
|-
| [[82 G. Eridani c]]|| || ≥2.4 || || || {{bad|508 K<br/> 235&nbsp;°C<ref name="aaa534"/> }} || 0.2036 || 0|| <ref name=epe_HD_20794/>||19.71
| [[82 G. Eridani c]]|| ≥2.4 || || || {{bad|508 K<br/> 235&nbsp;°C<ref name="aaa534"/> }} || 0.2036 || 0|| <ref name=epe_HD_20794/>||19.71
|-
|-
| [[82 G. Eridani d]]|| || ≥4.8 || || || {{bad|388 K<br/> 115&nbsp;°C<ref name="aaa534"/> }}
| [[82 G. Eridani d]]|| ≥4.8 || || || {{bad|388 K<br/> 115&nbsp;°C<ref name="aaa534"/> }}
|| 0.3499 || 0||<ref name=epe_HD_20794/>||19.71
|| 0.3499 || 0||<ref name=epe_HD_20794/>||19.71
|-
|-
| [[Gliese 581e|Gliese 581 e]]||[[File:Planet Gliese 581 e.png|200px]]||≥1.7|| || || || 0.029||0||<ref name="Vogt 2010"/>||20
| [[Gliese 581e|Gliese 581 e]]||≥1.7|| || || || 0.029||0||<ref name="Vogt 2010"/>||20
|-
|-


| [[Gliese 581 c]]<ref>{{cite journal |author=Valencia |title=Radius and Structure Models of the First Super-Earth Planet | year=2007 |journal=[[The Astrophysical Journal]]|volume=656|issue=1|pages=545–551|doi=10.1086/509800 |last2=Sasselov |first2=Dimitar D. |last3=O'Connell |first3=Richard J. |bibcode=2007ApJ...656..545V|arxiv = astro-ph/0610122 }}</ref>||[[File:Planetary System in Gliese 581 (artist's impression).jpg|200px]]||≥5.6|| || || || 0.072||0||<ref name="Vogt 2010">{{cite journal | last1=Vogt|first1= S. S.| year=2010|title=The Lick-Carnegie Exoplanet Survey: A 3.1 M_Earth Planet in the Habitable Zone of the Nearby M3V Star Gliese 581 | doi = 10.1088/0004-637x/723/1/954| bibcode=2010ApJ...723..954V| volume=723|issue= 1| journal=The Astrophysical Journal| pages=954–965|arxiv = 1009.5733 }}</ref>||20
| [[Gliese 581 c]]<ref>{{cite journal |author=Valencia |title=Radius and Structure Models of the First Super-Earth Planet | year=2007 |journal=[[The Astrophysical Journal]]|volume=656|issue=1|pages=545–551|doi=10.1086/509800 |last2=Sasselov |first2=Dimitar D. |last3=O'Connell |first3=Richard J. |bibcode=2007ApJ...656..545V|arxiv = astro-ph/0610122 }}</ref>||≥5.6|| || || || 0.072||0||<ref name="Vogt 2010">{{cite journal | last1=Vogt|first1= S. S.| year=2010|title=The Lick-Carnegie Exoplanet Survey: A 3.1 M_Earth Planet in the Habitable Zone of the Nearby M3V Star Gliese 581 | doi = 10.1088/0004-637x/723/1/954| bibcode=2010ApJ...723..954V| volume=723|issue= 1| journal=The Astrophysical Journal| pages=954–965|arxiv = 1009.5733 }}</ref>||20
|-
|-
| [[Gliese 581 d]]<ref>{{cite journal|bibcode=2007A&A...476.1365V|title=The Habitability of Super-Earths in Gliese 581|author1=von Bloh, W. |author2=Bounama, C. |author3=Cuntz, M. |author4=Franck, S. |journal=[[Astronomy & Astrophysics]]|volume=476|issue=3|pages=1365–1371|doi=10.1051/0004-6361:20077939|date=2007|arxiv = 0705.3758 }}</ref>||[[File:Planet Gliese 581 d.png|200px]]||≥5.6|| 2.34<ref name="hec">[http://phl.upr.edu/projects/habitable-exoplanets-catalog The Habitable Exoplanets Catalog]. The values are just the best estimates and are subject to change.</ref>|| 1.27<ref name="hec"/>||{{free|233 K<br/>-41&nbsp;°C}}<ref name="hec"/>
| [[Gliese 581 d]]<ref>{{cite journal|bibcode=2007A&A...476.1365V|title=The Habitability of Super-Earths in Gliese 581|author1=von Bloh, W. |author2=Bounama, C. |author3=Cuntz, M. |author4=Franck, S. |journal=[[Astronomy & Astrophysics]]|volume=476|issue=3|pages=1365–1371|doi=10.1051/0004-6361:20077939|date=2007|arxiv = 0705.3758 }}</ref>||≥5.6|| 2.34<ref name="hec">[http://phl.upr.edu/projects/habitable-exoplanets-catalog The Habitable Exoplanets Catalog]. The values are just the best estimates and are subject to change.</ref>|| 1.27<ref name="hec"/>||{{free|233 K<br/>-41&nbsp;°C}}<ref name="hec"/>
|| 0.218||0||<ref name="Vogt 2010"/>||20
|| 0.218||0||<ref name="Vogt 2010"/>||20
|-
|-
| [[HD 219134 b]] ||[[Image:PIA19833-RockyExoplanet-HD219134b-ArtistConcept-20150730.jpg|200px]] ||4.5 ||1.6 || ||{{bad|700 K<br/>427&nbsp;°C }}
| [[HD 219134 b]]||4.5 ||1.6 || ||{{bad|700 K<br/>427&nbsp;°C }}
|| || ||<ref>http://phys.org/news/2015-07-astronomers-star-super-earths.html</ref> || 21
|| || ||<ref>http://phys.org/news/2015-07-astronomers-star-super-earths.html</ref> || 21
|-
|-
| [[Gliese 667 Cb]] ||[[Image:Gliese 667.jpg|200px]] || 6.30 || || 1.44 ||{{bad|445 K<br/>
| [[Gliese 667 Cb]] || 6.30 || || 1.44 ||{{bad|445 K<br/>
172&nbsp;°C}}
172&nbsp;°C}}
|| 0.05 || 0.09 || <ref name="hec"/> || 22
|| 0.05 || 0.09 || <ref name="hec"/> || 22
|-
|-
|[[Gliese 667 Cc]]<ref>{{cite journal|arxiv=1111.5019|author1=Bonfils|author2=Delfosse|author3=Udry|author4=Forveille|author5=Mayor|author6=Perrier|author7=Bouchy|author8=Gillon|author9=Lovis|title=The HARPS search for southern extra-solar planets XXXI. The M-dwarf sample|date=2011|doi=10.1051/0004-6361/201014704|bibcode=2013A&A...549A.109B|volume=549|journal=Astronomy|page=A109}}</ref><ref>{{cite web|url=http://phl.upr.edu/press-releases/apotentialhabitableexoplanetinanearbytriplestarsystem|title=A Potential Habitable Exoplanet in a Nearby Triple Star System - Planetary Habitability Laboratory @ UPR Arecibo|access-date=3 October 2015}}</ref>||[[File:Gliese 667 Cc sunset.jpg|200px]] || 3.8 || || 1.32 ||{{won|302 K <br/>29&nbsp;°C }}
|[[Gliese 667 Cc]]<ref>{{cite journal|arxiv=1111.5019|author1=Bonfils|author2=Delfosse|author3=Udry|author4=Forveille|author5=Mayor|author6=Perrier|author7=Bouchy|author8=Gillon|author9=Lovis|title=The HARPS search for southern extra-solar planets XXXI. The M-dwarf sample|date=2011|doi=10.1051/0004-6361/201014704|bibcode=2013A&A...549A.109B|volume=549|journal=Astronomy|page=A109}}</ref><ref>{{cite web|url=http://phl.upr.edu/press-releases/apotentialhabitableexoplanetinanearbytriplestarsystem|title=A Potential Habitable Exoplanet in a Nearby Triple Star System - Planetary Habitability Laboratory @ UPR Arecibo|access-date=3 October 2015}}</ref>|| 3.8 || || 1.32 ||{{won|302 K <br/>29&nbsp;°C }}
|| 0.13 || 0.34 || <ref name="hec"/> || 22
|| 0.13 || 0.34 || <ref name="hec"/> || 22
|-
|-
| [[61 Virginis b]]<ref>{{cite journal |last=Vogt |first=Steven |arxiv=0912.2599 |title=A Super-Earth and two Neptunes Orbiting the Nearby Sun-like star 61 Virginis |year=2010 |author2=Wittenmyer |author3=Paul Butler |author4=Simon O'Toole |author5=Henry |author6=Rivera |author7=Stefano Meschiari |author8=Gregory Laughlin |author9=Tinney |doi=10.1088/0004-637X/708/2/1366 |bibcode=2010ApJ...708.1366V |volume=708 |issue=2 |journal=The Astrophysical Journal |pages=1366–1375}}</ref>||[[File:Artist concept 61vir b.png|200px]]||≥5.1|| || || || 0.050||0.12||<ref>Vogt, Steven (2009). \"A Super-Earth and two Neptunes Orbiting the Nearby Sun-like star 61 Virginis</ref>||28
| [[61 Virginis b]]<ref>{{cite journal |last=Vogt |first=Steven |arxiv=0912.2599 |title=A Super-Earth and two Neptunes Orbiting the Nearby Sun-like star 61 Virginis |year=2010 |author2=Wittenmyer |author3=Paul Butler |author4=Simon O'Toole |author5=Henry |author6=Rivera |author7=Stefano Meschiari |author8=Gregory Laughlin |author9=Tinney |doi=10.1088/0004-637X/708/2/1366 |bibcode=2010ApJ...708.1366V |volume=708 |issue=2 |journal=The Astrophysical Journal |pages=1366–1375}}</ref>||≥5.1|| || || || 0.050||0.12||<ref>Vogt, Steven (2009). \"A Super-Earth and two Neptunes Orbiting the Nearby Sun-like star 61 Virginis</ref>||28
|-
|-
| [[HD 85512 b]]<ref>{{cite journal|title=A Habitable Planet around HD 85512?|first=L|last=Kaltenegger|first2=S|last2=Udry|first3=F|last3=Pepe|date=2011|arxiv=1108.3561|bibcode=2011arXiv1108.3561K|volume=1108|pages=3561}}</ref>||[[File:HD 85512 b (Artists's impression).jpg|200px]]||≥3.6|| 1.74<ref name="hec"/>||1.33<ref name="hec"/> ||{{won|351 K<br/>78&nbsp;°C<ref name="hec"/>}}
| [[HD 85512 b]]<ref>{{cite journal|title=A Habitable Planet around HD 85512?|first=L|last=Kaltenegger|first2=S|last2=Udry|first3=F|last3=Pepe|date=2011|arxiv=1108.3561|bibcode=2011arXiv1108.3561K|volume=1108|pages=3561}}</ref>||≥3.6|| 1.74<ref name="hec"/>||1.33<ref name="hec"/> ||{{won|351 K<br/>78&nbsp;°C<ref name="hec"/>}}
|| 0.26||0.11||<ref name="Kaltenegger">Kaltenegger, L.; Udry, S.; Pepe, F. (2011). A Habitable Planet around HD 85512?</ref>||36
|| 0.26||0.11||<ref name="Kaltenegger">Kaltenegger, L.; Udry, S.; Pepe, F. (2011). A Habitable Planet around HD 85512?</ref>||36
|-
|-
| [[Gliese 180|GJ 180 b]]|| ||≥2.3 || || ||{{won|312 K<br/>39&nbsp;°C }}
| [[Gliese 180|GJ 180 b]]|| ≥2.3 || || ||{{won|312 K<br/>39&nbsp;°C }}
|| || ||<ref name="arxiv.org"/><ref name="phl.upr.edu">{{cite web|url=http://phl.upr.edu/projects/habitable-exoplanets-catalog/data|title=HEC: Data of Potentially Habitable Worlds - Planetary Habitability Laboratory @ UPR Arecibo|access-date=3 October 2015}}</ref> ||38
|| || ||<ref name="arxiv.org"/><ref name="phl.upr.edu">{{cite web|url=http://phl.upr.edu/projects/habitable-exoplanets-catalog/data|title=HEC: Data of Potentially Habitable Worlds - Planetary Habitability Laboratory @ UPR Arecibo|access-date=3 October 2015}}</ref> ||38


|-
|-
| [[TRAPPIST-1b]]||[[File:TRAPPIST-1b artist impression 2018.png|200px]]|||| || || || ||||<ref name="eso.org">{{cite journal | doi = 10.1038/nature21360 | url = http://www.eso.org/public/archives/releases/sciencepapers/eso1706/eso1706a.pdf | volume=542 | issue = 7642 | title=Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1 | journal=Nature | pages=456–460 | pmid=28230125 | pmc=5330437 | last1 = Gillon | first1 = M | last2 = Triaud | first2 = AH | last3 = Demory | first3 = BO | last4 = Jehin | first4 = E | last5 = Agol | first5 = E | last6 = Deck | first6 = KM | last7 = Lederer | first7 = SM | last8 = de Wit | first8 = J | last9 = Burdanov | first9 = A | last10 = Ingalls | first10 = JG | last11 = Bolmont | first11 = E | last12 = Leconte | first12 = J | last13 = Raymond | first13 = SN | last14 = Selsis | first14 = F | last15 = Turbet | first15 = M | last16 = Barkaoui | first16 = K | last17 = Burgasser | first17 = A | last18 = Burleigh | first18 = MR | last19 = Carey | first19 = SJ | last20 = Chaushev | first20 = A | last21 = Copperwheat | first21 = CM | last22 = Delrez | first22 = L | last23 = Fernandes | first23 = CS | last24 = Holdsworth | first24 = DL | last25 = Kotze | first25 = EJ | last26 = Van Grootel | first26 = V | last27 = Almleaky | first27 = Y | last28 = Benkhaldoun | first28 = Z | last29 = Magain | first29 = P | last30 = Queloz | first30 = D|arxiv = 1703.01424 |bibcode = 2017Natur.542..456G | year = 2017 }}</ref>||39.5
| [[TRAPPIST-1b]]|||| || || || ||||<ref name="eso.org">{{cite journal | doi = 10.1038/nature21360 | url = http://www.eso.org/public/archives/releases/sciencepapers/eso1706/eso1706a.pdf | volume=542 | issue = 7642 | title=Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1 | journal=Nature | pages=456–460 | pmid=28230125 | pmc=5330437 | last1 = Gillon | first1 = M | last2 = Triaud | first2 = AH | last3 = Demory | first3 = BO | last4 = Jehin | first4 = E | last5 = Agol | first5 = E | last6 = Deck | first6 = KM | last7 = Lederer | first7 = SM | last8 = de Wit | first8 = J | last9 = Burdanov | first9 = A | last10 = Ingalls | first10 = JG | last11 = Bolmont | first11 = E | last12 = Leconte | first12 = J | last13 = Raymond | first13 = SN | last14 = Selsis | first14 = F | last15 = Turbet | first15 = M | last16 = Barkaoui | first16 = K | last17 = Burgasser | first17 = A | last18 = Burleigh | first18 = MR | last19 = Carey | first19 = SJ | last20 = Chaushev | first20 = A | last21 = Copperwheat | first21 = CM | last22 = Delrez | first22 = L | last23 = Fernandes | first23 = CS | last24 = Holdsworth | first24 = DL | last25 = Kotze | first25 = EJ | last26 = Van Grootel | first26 = V | last27 = Almleaky | first27 = Y | last28 = Benkhaldoun | first28 = Z | last29 = Magain | first29 = P | last30 = Queloz | first30 = D|arxiv = 1703.01424 |bibcode = 2017Natur.542..456G | year = 2017 }}</ref>||39.5
|-
|-
| [[TRAPPIST-1c]]||[[File:TRAPPIST-1c artist impression 2018.png|200px]]|||| || || || ||||<ref name="eso.org"/>||39.5
| [[TRAPPIST-1c]]|||| || || || ||||<ref name="eso.org"/>||39.5
|-
|-
| [[TRAPPIST-1d]]||[[File:TRAPPIST-1d artist impression 2018.png|200px]]|||| || ||{{won|282.1 K<br/>9&nbsp;°C<ref name="hec"/>}} || ||||<ref name="eso.org"/>||39.5
| [[TRAPPIST-1d]]|||| || ||{{won|282.1 K<br/>9&nbsp;°C<ref name="hec"/>}} || ||||<ref name="eso.org"/>||39.5
|-
|-
| [[TRAPPIST-1e]]||[[File:TRAPPIST-1e artist impression 2018.png|200px]]|||| || ||{{won|246.1 K<br/>-27.1&nbsp;°C<ref name="hec"/>}} || ||||<ref name="eso.org"/>||39.5
| [[TRAPPIST-1e]]|||| || ||{{won|246.1 K<br/>-27.1&nbsp;°C<ref name="hec"/>}} || ||||<ref name="eso.org"/>||39.5
|-
|-
| [[TRAPPIST-1f]]||[[File:TRAPPIST-1f artist impression 2018.png|200px]]|||| || ||{{free|219 K<br/>-54&nbsp;°C<ref name="hec"/>}} || ||||<ref name="eso.org"/>||39.5
| [[TRAPPIST-1f]]|||| || ||{{free|219 K<br/>-54&nbsp;°C<ref name="hec"/>}} || ||||<ref name="eso.org"/>||39.5
|-
|-
| [[TRAPPIST-1g]]||[[File:TRAPPIST-1g artist impression 2018.png|200px]]|||| || ||{{free|198.6 K<br/>-75&nbsp;°C<ref name="hec"/>}} || ||||<ref name="eso.org"/>||39.5
| [[TRAPPIST-1g]]|||| || ||{{free|198.6 K<br/>-75&nbsp;°C<ref name="hec"/>}} || ||||<ref name="eso.org"/>||39.5
|-
|-
| [[TRAPPIST-1h]]||[[File:TRAPPIST-1h artist impression 2018.png|200px]]|||| || ||{{free|169 K<br/>-104&nbsp;°C<ref name="hec"/>}} || ||||<ref name="eso.org"/>||39.5
| [[TRAPPIST-1h]]|||| || ||{{free|169 K<br/>-104&nbsp;°C<ref name="hec"/>}} || ||||<ref name="eso.org"/>||39.5
|-
|-
| [[55 Cancri e]]<br>(Janssen)||[[File:PIA22069-Exoplanet-55Cancri-e-ArtistConcept-20171116.jpg|200px]]||8.6|| || || || 0.016||0.17||<ref>{{cite journal | last1 = Rebekah |display-authors=etal | year = 2010 | title = Radial velocity planets de-aliased. A new, short period for Super-Earth 55 Cnc e | doi = 10.1088/0004-637x/722/1/937| journal = The Astrophysical Journal | volume = 722 | issue = 1| pages = 937–953 | bibcode=2010ApJ...722..937D|arxiv = 1005.4050 }}</ref>||40
| [[55 Cancri e]]<br>(Janssen)||8.6|| || || || 0.016||0.17||<ref>{{cite journal | last1 = Rebekah |display-authors=etal | year = 2010 | title = Radial velocity planets de-aliased. A new, short period for Super-Earth 55 Cnc e | doi = 10.1088/0004-637x/722/1/937| journal = The Astrophysical Journal | volume = 722 | issue = 1| pages = 937–953 | bibcode=2010ApJ...722..937D|arxiv = 1005.4050 }}</ref>||40
|-
|-
| [[HD 40307 b]]<ref name="Mayor2009">{{cite journal|author1=M. Mayor |author2=S. Udry |author3=C. Lovis |author4=F. Pepe |author5=D. Queloz |author6=W. Benz |author7=J.-L. Bertaux |author8=F. Bouchy |author9=C. Mordasini |author10=D. Segransan |title=The HARPS search for southern extra-solar planets. XIII. A planetary system with 3 Super-Earths (4.2, 6.9, & 9.2 Earth masses)|arxiv=0806.4587|bibcode = 2009A&A...493..639M |doi = 10.1051/0004-6361:200810451|date= 2009|journal= Astronomy and Astrophysics|volume= 493|issue= 2|pages= 639–644 }}</ref>||{{Annotated image
| [[HD 40307 b]]<ref name="Mayor2009">{{cite journal|author1=M. Mayor |author2=S. Udry |author3=C. Lovis |author4=F. Pepe |author5=D. Queloz |author6=W. Benz |author7=J.-L. Bertaux |author8=F. Bouchy |author9=C. Mordasini |author10=D. Segransan |title=The HARPS search for southern extra-solar planets. XIII. A planetary system with 3 Super-Earths (4.2, 6.9, & 9.2 Earth masses)|arxiv=0806.4587|bibcode = 2009A&A...493..639M |doi = 10.1051/0004-6361:200810451|date= 2009|journal= Astronomy and Astrophysics|volume= 493|issue= 2|pages= 639–644 }}</ref>||
| image = A Trio of Super-Earths (artist's impression).jpg
| image-width = 1200 <!-- choose any width, as you like it. It doesn't matter the factual width of the image-->
| image-left = -490 <!-- crop the left part. Be aware of the "-" minus symbol -->
| image-top = -170 <!-- crop the upper part. Be aware of the "-" minus symbol -->
| width = 150 <!-- crop the right part. That will be the width of the image in the article -->
| height = 120 <!-- crop the below part. That will be the height of the image in the article -->
| float = left
| annotations = <!-- empty or not, this parameter must be included -->
| caption =
| icon = none
}}
||≥4.2|| || || || 0.047||0.2||<ref name="Mayor2009"/>||42
||≥4.2|| || || || 0.047||0.2||<ref name="Mayor2009"/>||42
|-
|-
| [[HD 40307 c]]<ref name="Mayor2009"/>||{{Annotated image
| [[HD 40307 c]]<ref name="Mayor2009"/>||≥6.8|| || || || 0.081||0.06||<ref name="Mayor2009"/>||42
| image = A Trio of Super-Earths (artist's impression).jpg
| image-width = 1200 <!-- choose any width, as you like it. It doesn't matter the factual width of the image-->
| image-left = -230 <!-- crop the left part. Be aware of the "-" minus symbol -->
| image-top = -520 <!-- crop the upper part. Be aware of the "-" minus symbol -->
| width = 150 <!-- crop the right part. That will be the width of the image in the article -->
| height = 120 <!-- crop the below part. That will be the height of the image in the article -->
| float = left
| annotations = <!-- empty or not, this parameter must be included -->
| caption =
| icon = none
}}
||≥6.8|| || || || 0.081||0.06||<ref name="Mayor2009"/>||42
|-
|-
| [[HD 40307 d]]<ref>{{cite journal|arxiv=0901.1698|author=Barnes, R., Jackson, B., Raymond, S., West, A., Greenberg, R.|title=The HD 40307 Planetary System: Super-Earths or Mini-Neptunes?|journal=[[The Astrophysical Journal]]|date=2009|doi=10.1088/0004-637X/695/2/1006|volume=695|issue=2|pages=1006–1011|bibcode=2009ApJ...695.1006B}}</ref>||[[File:A Trio of Super-Earths (artist's impression).jpg|150px|left]]||≥9.2|| || || || 0.134||0.07||<ref name="Mayor2009"/>||42
| [[HD 40307 d]]<ref>{{cite journal|arxiv=0901.1698|author=Barnes, R., Jackson, B., Raymond, S., West, A., Greenberg, R.|title=The HD 40307 Planetary System: Super-Earths or Mini-Neptunes?|journal=[[The Astrophysical Journal]]|date=2009|doi=10.1088/0004-637X/695/2/1006|volume=695|issue=2|pages=1006–1011|bibcode=2009ApJ...695.1006B}}</ref>||≥9.2|| || || || 0.134||0.07||<ref name="Mayor2009"/>||42
|-
|-
| [[HD 40307 e]]|| || ≥3.5 || || || || 0.1886 ||0.15|| <ref name="tuomi12"/>||42
| [[HD 40307 e]]|| ≥3.5 || || || || 0.1886 ||0.15|| <ref name="tuomi12"/>||42
|-
|-
| [[HD 40307 f]]|| || ≥5.2 || || ||{{bad|385 K<br/>112&nbsp;°C }}
| [[HD 40307 f]]|| ≥5.2 || || ||{{bad|385 K<br/>112&nbsp;°C }}
|| 0.247 ||0.02|| <ref name="tuomi12"/>||42
|| 0.247 ||0.02|| <ref name="tuomi12"/>||42
|-
|-
| [[HD 40307 g]]|| || ≥7.1 || || || {{won|284 K<br/>11&nbsp;°C<ref>{{cite web |title=HEC: Data of Potential Habitable Worlds |url=http://phl.upr.edu/projects/habitable-exoplanets-catalog/data |date=November 12, 2012 |publisher=[[University of Puerto Rico at Arecibo]] (Planetary Habitability Laboratory)}}</ref>}}
| [[HD 40307 g]]|| ≥7.1 || || || {{won|284 K<br/>11&nbsp;°C<ref>{{cite web |title=HEC: Data of Potential Habitable Worlds |url=http://phl.upr.edu/projects/habitable-exoplanets-catalog/data |date=November 12, 2012 |publisher=[[University of Puerto Rico at Arecibo]] (Planetary Habitability Laboratory)}}</ref>}}
|| 0.600 ||0.29||<ref name="tuomi12"/>||42
|| 0.600 ||0.29||<ref name="tuomi12"/>||42
|-
|-

Revision as of 01:32, 13 August 2021

This list of nearest terrestrial exoplanet candidates contains possible terrestrial ("rocky") exoplanets spaced at a distance of up to 50 light-years from the Solar System, ordered by increasing distance.[1][2][3]

They may be composed primarily of silicate rocks and/or metals. Within the Solar System, the terrestrial planets are the inner planets closest to the Sun.

Exoplanets discovered (incomplete)

This list is incomplete, currently containing 34 exoplanets, 11 of which probably lie inside their star's habitable zone.

There are roughly 2,000 stars at a distance of up to 50 light-years from the Solar System[4] (64 of them are yellow-orange "G" stars like our sun[5]). As many as 15% of them can have Earth-sized planets in the habitable zones.[6]

On November 4, 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarf stars within the Milky Way galaxy.[7][8] Eleven billion of these estimated planets may be orbiting Sun-like stars.[9] The nearest such planet was then as close as 12 light-years away[7][8] but (see below) is now estimated slightly above four light-years away.

On August 24, 2016, astronomers announced the discovery of a rocky planet in the habitable zone of Proxima Centauri, the closest star to Earth (not counting the Sun). Called Proxima b, the planet is 1.3 times the mass of Earth and has an orbital period of roughly 11.2 Earth days.[10] However, Proxima Centauri's classification as a red dwarf casts doubts on the habitability of any exoplanets in its orbit due to low stellar flux, high probability of tidal locking, small circumstellar habitable zones and high stellar variation. Another likely candidate is Alpha Centauri, Earth's nearest Sun-like star system 4.37 light-years away. Estimates place the probability of finding a habitable planet around Alpha Centauri A or B at roughly 75%.[11] Alpha Centauri is the target of several exoplanet-finding missions, including Breakthrough Starshot and Mission Centaur, the latter of which is chronicled in the 2016 documentary film The Search for Earth Proxima.[12]

Table

Name M⊕ R⊕ g Ts a e [s] D
Proxima Centauri b ≥1.27 ~1.1 234 K
-39°C		 0.05 <0.35 [13] 4.22
Proxima Centauri c ~7 39 K
-234 °C[14]		 ~1.489 ~0.04 4.22
Barnard's Star b ≥3.23 105 K
-168.15 °C		 0.404 0.32 [15] 5.958
Ross 128 b ≥1.40 213–301 K
 11.03
Luyten b ≥2.89 ≥1.35 259 K
-14 °C		 0.091 0.10 12.20
Wolf 1061b ≥1.36 ≥1.44 13.8
Wolf 1061c ≥4.3 ≥1.64 [16] 13.8
Wolf 1061d ≥5.21 ≥2.04 13.8
Gliese 876 d[17] 6.8 650 K
377 °C[18]		 0.021 0.21 [19] 15
Gliese 682 b ≥2 [6]
[20]
[16]		 16
Gliese 832 c ≥5.4 251 K
-22 °C 		0.162 0.03 [21][22] 16.16
82 G. Eridani b ≥2.7 660 K
387 °C[1]		 0.1207 0 [2] 19.71
82 G. Eridani c ≥2.4 508 K
235 °C[1]		 0.2036 0 [2] 19.71
82 G. Eridani d ≥4.8 388 K
115 °C[1] 		0.3499 0 [2] 19.71
Gliese 581 e ≥1.7 0.029 0 [23] 20
Gliese 581 c[24] ≥5.6 0.072 0 [23] 20
Gliese 581 d[25] ≥5.6 2.34[26] 1.27[26] 233 K
-41 °C[26] 		0.218 0 [23] 20
HD 219134 b 4.5 1.6 700 K
427 °C 		[27] 21
Gliese 667 Cb 6.30 1.44 445 K

172 °C

0.05 0.09 [26] 22
Gliese 667 Cc[28][29] 3.8 1.32 302 K
29 °C 		0.13 0.34 [26] 22
61 Virginis b[30] ≥5.1 0.050 0.12 [31] 28
HD 85512 b[32] ≥3.6 1.74[26] 1.33[26] 351 K
78 °C[26] 		0.26 0.11 [33] 36
GJ 180 b ≥2.3 312 K
39 °C 		[6][21] 38
TRAPPIST-1b [34] 39.5
TRAPPIST-1c [34] 39.5
TRAPPIST-1d 282.1 K
9 °C[26]		 [34] 39.5
TRAPPIST-1e 246.1 K
-27.1 °C[26]		 [34] 39.5
TRAPPIST-1f 219 K
-54 °C[26]		 [34] 39.5
TRAPPIST-1g 198.6 K
-75 °C[26]		 [34] 39.5
TRAPPIST-1h 169 K
-104 °C[26]		 [34] 39.5
55 Cancri e
(Janssen)		 8.6 0.016 0.17 [35] 40
HD 40307 b[36] ≥4.2 0.047 0.2 [36] 42
HD 40307 c[36] ≥6.8 0.081 0.06 [36] 42
HD 40307 d[37] ≥9.2 0.134 0.07 [36] 42
HD 40307 e ≥3.5 0.1886 0.15 [3] 42
HD 40307 f ≥5.2 385 K
112 °C 		0.247 0.02 [3] 42
HD 40307 g ≥7.1 284 K
11 °C[38] 		0.600 0.29 [3] 42

Note: There is no scientific consensus about terrestrial composition of most of the planets in the list. Sources in the "Main source" column confirm the possibility of terrestrial composition.

In September 2012, the discovery of two planets orbiting Gliese 163[39] was announced.[40][41] One of the planets, Gliese 163 c, about 6.9 times the mass of Earth and somewhat hotter, was considered to be within the habitable zone, but is probably not terrestrial.[40][41] In May 2016, the finding of three Earth-like planets of ultracool dwarf TRAPPIST-1 has been released.

Statistics

Distance from the Solar System
Distance Lying within
the habitable zone 		All
< 10 light-years 0 (2?) 2
< 20 light-years 6 15
< 30 light-years 8 22
< 40 light-years 10 24
< 50 light-years 11 31

Note: in most cases the composition of the atmosphere and atmosphere pressure of exoplanets are unknown, so surface temperatures are estimates based on computer models and expert opinions.

See also

References

  1. ^ a b c d Pepe, F.; et al. (2011), "The HARPS search for Earth-like planets in the habitable zone: I – Very low-mass planets around HD20794, HD85512 and HD192310", Astronomy & Astrophysics, 534: A58, arXiv:1108.3447, Bibcode:2011A&A...534A..58P, doi:10.1051/0004-6361/201117055
  2. ^ a b c d Schneider, Jean, "Star: HD 20794", Extrasolar Planets Encyclopaedia, Paris Observatory, retrieved 2011-12-05
  3. ^ a b c d Tuomi, Anglada-Escude, Gerlach, Jones, Reiners, Rivera, Vogt, Butler, Mikko, Guillem, Enrico, Hugh R. R., Ansgar, Eugenio J., Steven S., R. Paul; Anglada-Escude, Guillem; Gerlach, Enrico; Jones, Hugh R. R.; Reiners, Ansgar; Rivera, Eugenio J.; Vogt, Steven S.; Paul Butler, R. (2012). "Habitable-zone super-Earth candidate in a six-planet system around the K2.5V star HD 40307". Astronomy & Astrophysics. 549: A48. arXiv:1211.1617. Bibcode:2013A&A...549A..48T. doi:10.1051/0004-6361/201220268.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  4. ^ "Stars within 50 light years". Retrieved 3 October 2015.
  5. ^ "G stars within 100 light-years". Retrieved 3 October 2015.
  6. ^ a b c Tuomi, Mikko; Jones, Hugh R. A.; Barnes, John R.; Anglada-Escudé, Guillem; Jenkins, James S. (2014). "Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics". Monthly Notices of the Royal Astronomical Society. 441 (2): 1545–1569. arXiv:1403.0430. Bibcode:2014MNRAS.441.1545T. doi:10.1093/mnras/stu358.
  7. ^ a b Overbye, Dennis (November 4, 2013). "Far-Off Planets Like the Earth Dot the Galaxy". New York Times. Retrieved November 5, 2013.
  8. ^ a b Petigura, Eric A.; Howard, Andrew W.; Marcy, Geoffrey W. (October 31, 2013). "Prevalence of Earth-size planets orbiting Sun-like stars". Proceedings of the National Academy of Sciences of the United States of America. 110 (48): 19273–19278. arXiv:1311.6806. Bibcode:2013PNAS..11019273P. doi:10.1073/pnas.1319909110. PMC 3845182. PMID 24191033. Retrieved November 5, 2013.
  9. ^ Khan, Amina (November 4, 2013). "Milky Way may host billions of Earth-size planets". Los Angeles Times. Retrieved November 5, 2013.
  10. ^ Anglada-Escudé, Guillem (August 24, 2016). "A terrestrial planet candidate in a temperate orbit around Proxima Centauri" (PDF). Nature. 536 (7617): 437–40. arXiv:1609.03449. Bibcode:2016Natur.536..437A. doi:10.1038/nature19106. PMID 27558064.
  11. ^ Billings, Lee. "Miniature Space Telescope Could Boost the Hunt for "Earth Proxima"". Scientific American.
  12. ^ "The Search for Earth Proxima". The Atlantic.
  13. ^ Anglada-Escudé, Guillem; Amado, Pedro J.; Barnes, John; Berdiñas, Zaira M.; Butler, R. Paul; Coleman, Gavin A. L.; de la Cueva, Ignacio; Dreizler, Stefan; Endl, Michael; Giesers, Benjamin; Jeffers, Sandra V.; Jenkins, James S.; Jones, Hugh R. A.; Kiraga, Marcin; Kürster, Martin; López-González, Marίa J.; Marvin, Christopher J.; Morales, Nicolás; Morin, Julien; Nelson, Richard P.; Ortiz, José L.; Ofir, Aviv; Paardekooper, Sijme-Jan; Reiners, Ansgar; Rodríguez, Eloy; Rodrίguez-López, Cristina; Sarmiento, Luis F.; Strachan, John P.; Tsapras, Yiannis; Tuomi, Mikko; Zechmeister, Mathias (25 August 2016). "A terrestrial planet candidate in a temperate orbit around Proxima Centauri". Nature. 536 (7617): 437–440. arXiv:1609.03449. Bibcode:2016Natur.536..437A. doi:10.1038/nature19106. ISSN 0028-0836. PMID 27558064.
  14. ^ Wall, Mike (12 April 2019). "Possible 2nd Planet Spotted Around Proxima Centauri". Space.com. Retrieved 22 July 2020.
  15. ^ https://www.eso.org/public/archives/releases/sciencepapers/eso1837/eso1837a.pdf
  16. ^ a b http://phl.upr.edu/projects/habitable-exoplanets-catalog/data
  17. ^ Fogg, M. J.; Nelson, R. P. (2005). "Oligarchic and giant impact growth of terrestrial planets in the presence of gas giant planet migration". Astronomy and Astrophysics. 441 (2): 791–806. arXiv:astro-ph/0507180. Bibcode:2005A&A...441..791F. doi:10.1051/0004-6361:20053453.
  18. ^ Rivera, E.; et al. (2005). "A ~7.5 M⊕ Planet Orbiting the Nearby Star, GJ 876". The Astrophysical Journal. 634 (1): 625–640. arXiv:astro-ph/0510508. Bibcode:2005ApJ...634..625R. doi:10.1086/491669.
  19. ^ Eugenio J. Rivera, Gregory Laughlin, R. Paul Butler, Steven S. Vogt, Nader Haghighipour, Stefano Meschiari (2010). "The Lick-Carnegie Exoplanet Survey: A Uranus-mass Fourth Planet for GJ 876 in an Extrasolar Laplace Configuration".
  20. ^ http://www.hpcf.upr.edu/~abel/phl/tuomi/hec_orbit_GJ_682_b.png
  21. ^ a b "HEC: Data of Potentially Habitable Worlds - Planetary Habitability Laboratory @ UPR Arecibo". Retrieved 3 October 2015.
  22. ^ "A Nearby Super-Earth with the Right Temperature but Extreme Seasons - Planetary Habitability Laboratory @ UPR Arecibo". Retrieved 3 October 2015.
  23. ^ a b c Vogt, S. S. (2010). "The Lick-Carnegie Exoplanet Survey: A 3.1 M_Earth Planet in the Habitable Zone of the Nearby M3V Star Gliese 581". The Astrophysical Journal. 723 (1): 954–965. arXiv:1009.5733. Bibcode:2010ApJ...723..954V. doi:10.1088/0004-637x/723/1/954.
  24. ^ Valencia; Sasselov, Dimitar D.; O'Connell, Richard J. (2007). "Radius and Structure Models of the First Super-Earth Planet". The Astrophysical Journal. 656 (1): 545–551. arXiv:astro-ph/0610122. Bibcode:2007ApJ...656..545V. doi:10.1086/509800.
  25. ^ von Bloh, W.; Bounama, C.; Cuntz, M.; Franck, S. (2007). "The Habitability of Super-Earths in Gliese 581". Astronomy & Astrophysics. 476 (3): 1365–1371. arXiv:0705.3758. Bibcode:2007A&A...476.1365V. doi:10.1051/0004-6361:20077939.
  26. ^ a b c d e f g h i j k l m The Habitable Exoplanets Catalog. The values are just the best estimates and are subject to change.
  27. ^ http://phys.org/news/2015-07-astronomers-star-super-earths.html
  28. ^ Bonfils; Delfosse; Udry; Forveille; Mayor; Perrier; Bouchy; Gillon; Lovis (2011). "The HARPS search for southern extra-solar planets XXXI. The M-dwarf sample". Astronomy. 549: A109. arXiv:1111.5019. Bibcode:2013A&A...549A.109B. doi:10.1051/0004-6361/201014704.
  29. ^ "A Potential Habitable Exoplanet in a Nearby Triple Star System - Planetary Habitability Laboratory @ UPR Arecibo". Retrieved 3 October 2015.
  30. ^ Vogt, Steven; Wittenmyer; Paul Butler; Simon O'Toole; Henry; Rivera; Stefano Meschiari; Gregory Laughlin; Tinney (2010). "A Super-Earth and two Neptunes Orbiting the Nearby Sun-like star 61 Virginis". The Astrophysical Journal. 708 (2): 1366–1375. arXiv:0912.2599. Bibcode:2010ApJ...708.1366V. doi:10.1088/0004-637X/708/2/1366.
  31. ^ Vogt, Steven (2009). \"A Super-Earth and two Neptunes Orbiting the Nearby Sun-like star 61 Virginis
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External links

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