G 9-40 b: Difference between revisions
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Artist's impression and size comparison of the planet G 9-40 b with Earth |
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| extrasolarplanet = yes |
| extrasolarplanet = yes |
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| name = G 9-40 b |
| name = G 9-40 b |
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| image |
| image = G 9-40 b.jpg |
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| caption = Artist's impression and size comparison of the planet G 9-40 b with Earth |
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| apsis = astron |
| apsis = astron |
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| discovery_ref = <ref name=Stefansson2019>{{citation|arxiv=1912.00291|year=2019|title=A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder|doi=10.3847/1538-3881/ab5f15|last1=Stefánsson |first1=Guðmundur |last2=Cañas |first2=Caleb |last3=Wisniewski |first3=John |last4=Robertson |first4=Paul |last5=Mahadevan |first5=Suvrath |last6=Maney |first6=Marissa |last7=Kanodia |first7=Shubham |last8=Beard |first8=Corey |last9=Bender |first9=Chad F. |last10=Brunt |first10=Peter |last11=Clemens |first11=J. Christopher |last12=Cochran |first12=William |last13=Diddams |first13=Scott A. |last14=Endl |first14=Michael |last15=Ford |first15=Eric B. |last16=Fredrick |first16=Connor |last17=Halverson |first17=Samuel |last18=Hearty |first18=Fred |last19=Hebb |first19=Leslie |last20=Huehnerhoff |first20=Joseph |last21=Jennings |first21=Jeff |last22=Kaplan |first22=Kyle |last23=Levi |first23=Eric |last24=Lubar |first24=Emily |last25=Metcalf |first25=Andrew J. |last26=Monson |first26=Andrew |last27=Morris |first27=Brett |last28=Ninan |first28=Joe P. |last29=Nitroy |first29=Colin |last30=Ramsey |first30=Lawrence |journal=The Astronomical Journal |volume=159 |issue=3 |page=100 |s2cid=208526899 |display-authors=1 |bibcode=2020AJ....159..100S |doi-access=free }}</ref> |
| discovery_ref = <ref name=Stefansson2019>{{citation|arxiv=1912.00291|year=2019|title=A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder|doi=10.3847/1538-3881/ab5f15|last1=Stefánsson |first1=Guðmundur |last2=Cañas |first2=Caleb |last3=Wisniewski |first3=John |last4=Robertson |first4=Paul |last5=Mahadevan |first5=Suvrath |last6=Maney |first6=Marissa |last7=Kanodia |first7=Shubham |last8=Beard |first8=Corey |last9=Bender |first9=Chad F. |last10=Brunt |first10=Peter |last11=Clemens |first11=J. Christopher |last12=Cochran |first12=William |last13=Diddams |first13=Scott A. |last14=Endl |first14=Michael |last15=Ford |first15=Eric B. |last16=Fredrick |first16=Connor |last17=Halverson |first17=Samuel |last18=Hearty |first18=Fred |last19=Hebb |first19=Leslie |last20=Huehnerhoff |first20=Joseph |last21=Jennings |first21=Jeff |last22=Kaplan |first22=Kyle |last23=Levi |first23=Eric |last24=Lubar |first24=Emily |last25=Metcalf |first25=Andrew J. |last26=Monson |first26=Andrew |last27=Morris |first27=Brett |last28=Ninan |first28=Joe P. |last29=Nitroy |first29=Colin |last30=Ramsey |first30=Lawrence |journal=The Astronomical Journal |volume=159 |issue=3 |page=100 |s2cid=208526899 |display-authors=1 |bibcode=2020AJ....159..100S |doi-access=free }}</ref> |
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Revision as of 11:00, 15 June 2024
 Artist's impression and size comparison of the planet G 9-40 b with Earth | |
| Discovery[1] | |
|---|---|
| Discovery date | December 2019 |
| radial velocity and transit | |
| Orbital characteristics[1][2] | |
| 0.0385+0.0078 −0.0053 AU | |
| Eccentricity | 0 |
| 5.7459982±0.0000020 d | |
| Inclination | 88.57+0.63 −0.47 |
| Physical characteristics[2] | |
| 1.900±0.065R🜨 | |
| Mass | 4.00±0.63ME |
Mean density | 3.20+0.63 −0.58 |
| 10.8±1.8 m/s2 | |
| Temperature | 440.6±7.6 |
G 9-40 b is a Super-Earth exoplanet that has an orbital period of 5.7 days. The host star is a red dwarf located 91 light years away from Earth between Cancer and Hydra. The planet was discovered in 2019.[3][4]
See also
References
- ^ a b Stefánsson, Guðmundur; et al. (2019), "A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder", The Astronomical Journal, 159 (3): 100, arXiv:1912.00291, Bibcode:2020AJ....159..100S, doi:10.3847/1538-3881/ab5f15, S2CID 208526899
- ^ a b Luque, R.; et al. (2022), "Precise mass determination for the keystone sub-Neptune planet transiting the mid-type M dwarf G 9-40", Astronomy & Astrophysics, 666: A154, arXiv:2208.07287, Bibcode:2022A&A...666A.154L, doi:10.1051/0004-6361/202244426, S2CID 251564548
- ^ "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2021-03-23.
- ^ "The Extrasolar Planet Encyclopaedia — G 9-40 b". Extrasolar Planets Encyclopaedia. Retrieved 28 March 2021.
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