Jump to content

31824 Elatus: Difference between revisions

From Wikipedia, the free encyclopedia
Browse history interactively
← Previous editNext edit →
Content deleted Content added
VisualWikitext
article rewrite 2017
Line 1: Line 1:
{{Infobox planet
#REDIRECT [[List of minor planets: 31001–32000#824]]
| minorplanet = yes
| name = 31824 Elatus
| background = #C7FF8F
| image =
| image_size =
| caption =
| discovery_ref = &thinsp;<ref name="jpldata" />
| discoverer = [[Catalina Sky Survey|Catalina Sky Srvy.]]
| discovery_site = [[Mount Lemmon Observatory|Mount Lemmon Obs.]]
| discovered = 29 October 1999
| mpc_name = (31824) Elatus
| alt_names = {{mp|1999 UG|5}}
| pronounced =
| named_after = [[Elatus]]&thinsp;<ref name="springer" /> {{small|([[Greek mythology]])}}
| mp_category = [[Centaur (minor planet)|centaur]]&thinsp;<ref name="jpldata" /><ref name="lcdb" />{{·}}[[Distant minor planet|distant]]&thinsp;<ref name="MPC-object" />
| orbit_ref = &thinsp;<ref name="jpldata" />
| epoch = 4 September 2017 ([[Julian day|JD]] 2458000.5)
| uncertainty = 2
| observation_arc = 10.58 yr (3,864 days)
| aphelion = 16.298 [[Astronomical unit|AU]]
| perihelion = 7.3239 AU
| semimajor = 11.811 AU
| eccentricity = 0.3799
| period = 40.59 [[Julian year (astronomy)|yr]] (14,826 days)
| mean_anomaly = 170.74[[Degree (angle)|°]]
| mean_motion = {{Deg2DMS|0.0243|sup=ms}} / day
| inclination = 5.2447°
| asc_node = 87.158°
| arg_peri = 281.62°
| dimensions = 45.87 km {{small|(derived)}}<ref name="lcdb" /><br />{{val|49.8|10.4}} km<ref name="Duffard-2014" /><br />{{val|57.000|15.900}} km<ref name="Bauer-2013" />
| rotation = {{val|26.5|}} [[Hour|h]]<ref name="Gutierrez-2001" /><br />{{val|26.82|}} h<ref name="Bauer-2002" />
| albedo = {{val|0.049|0.028}}<ref name="Duffard-2014" /><br />{{val|0.050|0.028}}<ref name="Bauer-2013" /><br />0.057 {{small|(assumed)}}<ref name="lcdb" />
| spectral_type = [[Trans-Neptunian object#Spectra|RR]]&thinsp;<ref name="Lowry-2007b" />{{·}}[[D-type asteroid|D]]&thinsp;<ref name="lcdb" />
| abs_magnitude = 10.1<ref name="jpldata" />{{·}}10.32<ref name="Bauer-2002" />{{·}}{{val|10.40|0.09}}<ref name="Duffard-2014" />{{·}}10.42<ref name="Gutierrez-2001" /><ref name="lcdb" />{{·}}{{val|10.439|0.107}} {{small|(R)}}<ref name="Peixinho-2012" />{{·}}10.49<ref name="Romanishin-2005" />{{·}}10.61<ref name="Peixinho-2001" />
}}


'''31824 Elatus''', provisional designation {{mpf|1999 UG|5}}, is a dark [[Centaur (minor planet)|centaur]] from the [[outer Solar System]], approximately 48 kilometers in diameter. It was discovered on 29 October 1999, by astronomers of the [[Catalina Sky Survey]] at [[Mount Lemmon Observatory]] in Arizona, United States.<ref name="MPC-object" /> The [[minor planet]] was named after [[Elatus]], a [[centaur]] from [[Greek mythology]].<ref name="springer" />
{{NASTRO comment}}

== Orbit and classification ==

''Elatus'' orbits the Sun at a distance of 7.3–16.3&nbsp;[[Astronomical unit|AU]] once every 40 years and 7 months (14,826 days). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.38 and an [[orbital inclination|inclination]] of 5[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" />

The body's [[observation arc]] begins with a [[precovery]] taken by the [[Sloan Digital Sky Survey]] at [[Apache Point Observatory]] in September 1998, thirteen months prior to its official discovery observation.<ref name="MPC-object" />

== Physical characteristics ==

=== Rotation period ===

Two rotational [[lightcurve]]s of ''Elatus'' were obtained from photometric observations. Lightcurve analysis gave a longer-than-average [[rotation period]] of 26.5 and 26.82 hours with a concurring brightness variation of 0.10 [[Magnitude (astronomy)|magnitude]] ({{small|[[LCDB quality code|U=2/2]]}}).<ref name="Gutierrez-2001" /><ref name="Bauer-2002" />

=== Diameter and albedo ===

According to observations by ESA's [[Herschel Space Observatory]] with its [[Herschel Space Observatory#PACS|PACS]] instrument and the survey carried out by the [[NEOWISE]] mission of NASA's [[Wide-field Infrared Survey Explorer]] ''Elatus'' measures 49.8 and 57.000 kilometers in diameter and its surface has an [[astronomical albedo|albedo]] of 0.049 and 0.050, respectively.<ref name="Duffard-2014" /><ref name="Bauer-2013" /> The ''Collaborative Asteroid Lightcurve Link'' assumes a standard albedo for carbonaceous minor planets of 0.057 and derives a diameter of 45.87 kilometers based on an [[absolute magnitude]] of 10.42.<ref name="lcdb" />

== Naming ==

This [[minor planet]] was named after [[Elatus]], a [[centaur]] from [[Greek mythology]], who was killed during a battle with Heracles ''(also see [[5143&nbsp;Heracles]])'' by a poisoned arrow that passed through his arm and continued to wound Chiron in the knee ''(also see [[2060&nbsp;Chiron]])''. The name "Elatus" means means "fir man" and is associated with woodlands.<ref name="springer" /> The official naming citation was published by the [[Minor Planet Center]] on 14 June 2003 ({{small|[[Minor Planet Circulars|M.P.C.]] 49102}}).<ref name="MPC-Circulars-Archive" />

== References ==
{{reflist|30em|refs=

<ref name="jpldata">{{cite web
|type = 2009-04-18 last obs.
|title = JPL Small-Body Database Browser: 31824 Elatus (1999 UG5)
|url = http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2031824
|publisher = Jet Propulsion Laboratory
|accessdate = 21 September 2017}}</ref>

<ref name="springer">{{cite book
|title = Dictionary of Minor Planet Names – (31824) Elatus, Addendum to Fifth Edition: 2003–2005
|last = Schmadel | first = Lutz D.
|publisher = Springer Berlin Heidelberg
|page = 198
|date = 2006
|url = https://link.springer.com/referenceworkentry/10.1007/978-3-540-34361-5_2331
|isbn = 978-3-540-34361-5
|accessdate = 21 September 2017}}</ref>

<ref name="MPC-object">{{cite web
|title = 31824 Elatus (1999 UG5)
|work = Minor Planet Center
|url = http://www.minorplanetcenter.net/db_search/show_object?object_id=31824
|accessdate = 21 September 2017}}</ref>

<ref name="MPC-Circulars-Archive">{{cite web
|title = MPC/MPO/MPS Archive
|work = Minor Planet Center
|url = http://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
|accessdate = 21 September 2017}}</ref>

<ref name="Bauer-2013">{{Cite journal
|display-authors = 6
|first1 = James M. |last1 = Bauer
|first2 = Tommy |last2 = Grav
|first3 = Erin |last3 = Blauvelt
|first4 = A. K. |last4 = Mainzer
|first5 = Joseph R. |last5 = Masiero
|first6 = Rachel |last6 = Stevenson
|first7 = Emily |last7 = Kramer
|first8 = Yan R. |last8 = Fernández
|first9 = C. M. |last9 = Lisse
|first10 = Roc M. |last10 = Cutri
|first11 = Paul R. |last11 = Weissman
|first12 = John W. |last12 = Dailey
|first13 = Frank J. |last13 = Masci
|first14 = Russel |last14 = Walker
|first15 = Adam |last15 = Waszczak
|first16 = Carrie R. |last16 = Nugent
|first17 = Karen J. |last17 = Meech
|first18 = Andrew |last18 = Lucas
|first19 = George |last19 = Pearman
|first20 = Ashlee |last20 = Wilkins
|first21 = Jessica |last21 = Watkins
|first22 = Shrinivas |last22 = Kulkarni
|first23 = Edward L. |last23 = Wright
|first24 = |last24 = WISE Team
|first25 = |last25 = PTF Team
|date = August 2013
|title = Centaurs and Scattered Disk Objects in the Thermal Infrared: Analysis of WISE/NEOWISE Observations
|url = https://arxiv.org/pdf/1306.1862.pdf
|journal = The Astrophysical Journal
|volume = 773
|issue = 1
|page = 11
|bibcode = 2013ApJ...773...22B
|doi = 10.1088/0004-637X/773/1/22
|arxiv = 1306.1862
|access-date= 21 September 2017}}</ref>

<ref name="lcdb">{{cite web
|title = LCDB Data for (31824) Elatus
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=31824%7CElatus
|accessdate = 21 September 2017}}</ref>

<ref name="Duffard-2014">{{cite journal
|display-authors = 6
|first1 = R. |last1 = Duffard
|first2 = N. |last2 = Pinilla-Alonso
|first3 = P. |last3 = Santos-Sanz
|first4 = E. |last4 = Vilenius
|first5 = J. L. |last5 = Ortiz
|first6 = T. |last6 = Mueller
|first7 = S. |last7 = Fornasier
|first8 = E. |last8 = Lellouch
|first9 = M. |last9 = Mommert
|first10 = A. |last10 = Pal
|first11 = C. |last11 = Kiss
|first12 = M. |last12 = Mueller
|first13 = J. |last13 = Stansberry
|first14 = A. |last14 = Delsanti
|first15 = N. |last15 = Peixinho
|first16 = D. |last16 = Trilling
|date = April 2014
|title = "TNOs are Cool": A survey of the trans-Neptunian region. XI. A Herschel-PACS view of 16 Centaurs
|url = http://arxiv.org/pdf/1309.0946v3.pdf
|journal = Astronomy and Astrophysics
|volume = 564
|page = 17
|bibcode = 2014A&A...564A..92D
|doi = 10.1051/0004-6361/201322377
|arxiv = 1309.0946
|access-date= 21 September 2017}}</ref>

<ref name="Gutierrez-2001">{{Cite journal
|first1 = P. J. |last1 = Gutiérrez
|first2 = J. L. |last2 = Ortiz
|first3 = E. |last3 = Alexandrino
|first4 = M. |last4 = Roos-Serote
|first5 = A. |last5 = Doressoundiram
|date = June 2001
|title = Short term variability of Centaur 1999 UG5}
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2001A&A...371L...1G
|journal = Astronomy and Astrophysics
|pages = L1–L4
|bibcode = 2001A&A...371L...1G
|doi = 10.1051/0004-6361:20010418
|access-date= 21 September 2017}}</ref>

<ref name="Bauer-2002">{{Cite journal
|first1 = James M. |last1 = Bauer
|first2 = Karen J. |last2 = Meech
|first3 = Yanga R. |last3 = Fernández
|first4 = Tony L. |last4 = Farnham
|first5 = Ted L. |last5 = Roush
|date = December 2002
|title = Observations of the Centaur 1999 UG5: Evidence of a Unique Outer Solar System Surface
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2002PASP..114.1309B
|journal = The Publications of the Astronomical Society of the Pacific
|volume = 114
|issue = 802
|pages = 1309–1321
|bibcode = 2002PASP..114.1309B
|doi = 10.1086/344586
|access-date= 21 September 2017}}</ref>

<ref name="Peixinho-2001">{{Cite journal
|first1 = N. |last1 = Peixinho
|first2 = P. |last2 = Lacerda
|first3 = J. L. |last3 = Ortiz
|first4 = A. |last4 = Doressoundiram
|first5 = M. |last5 = Roos-Serote
|first6 = P. J. |last6 = Gutiérrez
|date = May 2001
|title = Photometric study of Centaurs 10199 Chariklo (1997 CU26) and 1999 UG5
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2001A&A...371..753P
|journal = Astronomy and Astrophysics
|pages = 753–759
|bibcode = 2001A&A...371..753P
|doi = 10.1051/0004-6361:20010382
|access-date= 21 September 2017}}</ref>

<ref name="Romanishin-2005">{{Cite journal
|first1 = W. |last1 = Romanishin
|first2 = S. C. |last2 = Tegler
|date = December 2005
|title = Accurate absolute magnitudes for Kuiper belt objects and Centaurs
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2005Icar..179..523R
|journal = Icarus
|volume = 179
|issue = 2
|pages = 523–526
|bibcode = 2005Icar..179..523R
|doi = 10.1016/j.icarus.2005.06.016
|access-date= 21 September 2017}}</ref>

<ref name="Peixinho-2012">{{cite journal
|first1 = N. |last1 = Peixinho
|first2 = A. |last2 = Delsanti
|first3 = A. |last3 = Guilbert-Lepoutre
|first4 = R. |last4 = Gafeira
|first5 = P. |last5 = Lacerda
|date = October 2012
|title = The bimodal colors of Centaurs and small Kuiper belt objects
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...546A..86P
|journal = Astronomy and Astrophysics
|volume = 546
|page = 12
|bibcode = 2012A&A...546A..86P
|doi = 10.1051/0004-6361/201219057
|arxiv = 1206.3153
|access-date= 21 September 2017}}</ref>

<ref name="Lowry-2007b">{{Cite journal
|first1 = Stephen C. |last1 = Lowry
|first2 = Paul R. |last2 = Weissman
|date = May 2007
|title = Rotation and color properties of the nucleus of Comet 2P/Encke
|url = https://arxiv.org/pdf/astro-ph/0612380.pdf
|journal = Icarus
|volume = 188
|issue = 1
|pages = 212–223
|bibcode = 2007Icar..188..212L
|doi = 10.1016/j.icarus.2006.11.014
|arxiv = astro-ph/0612380
|access-date= 21 September 2017}}</ref>

}} <!-- end of reflist -->

== External links ==
* [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info])
* [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
* [http://obswww.unige.ch/~behrend/page_cou.html Asteroids and comets rotation curves, CdR] – Observatoire de Genève, Raoul Behrend
* [http://www.minorplanetcenter.net/iau/lists/NumberedMPs030001.html Discovery Circumstances: Numbered Minor Planets (30001)-(35000)] – Minor Planet Center
* {{JPL small body}}

{{Minor planets navigator |31823 Viète |number=31824 | }}
{{Small Solar System bodies}}


{{DEFAULTSORT:Elatus}}
{{DEFAULTSORT:Elatus}}
[[Category:Centaurs (minor planets)|031824]]
[[Category:Centaurs (minor planets)|031824]]
[[Category:Minor planets named from Greek mythology]]
[[Category:Numbered minor planets|031824]]
[[Category:Astronomical objects discovered in 1999|19991029]]
[[Category:Discoveries by CSS|031824]]
[[Category:Discoveries by CSS|031824]]
[[Category:Minor planet redirects|31824 Elatus]]
[[Category:Minor planets named from Greek mythology]]
[[Category:Named minor planets]]
[[Category:Named minor planets]]
[[Category:Astronomical objects discovered in 1999|19991029]]

Revision as of 21:00, 21 September 2017

31824 Elatus
Discovery [1]
Discovered byCatalina Sky Srvy.
Discovery siteMount Lemmon Obs.
Discovery date29 October 1999
Designations
(31824) Elatus
Named after
Elatus [2] (Greek mythology)
1999 UG5
centaur [1][3] · distant [4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 2
Observation arc10.58 yr (3,864 days)
Aphelion16.298 AU
Perihelion7.3239 AU
11.811 AU
Eccentricity0.3799
40.59 yr (14,826 days)
170.74°
0° 1m 27.48s / day
Inclination5.2447°
87.158°
281.62°
Physical characteristics
Dimensions45.87 km (derived)[3]
49.8±10.4 km[5]
57.000±15.900 km[6]
26.5 h[7]
26.82 h[8]
0.049±0.028[5]
0.050±0.028[6]
0.057 (assumed)[3]
RR [9] · D [3]
10.1[1] · 10.32[8] · 10.40±0.09[5] · 10.42[7][3] · 10.439±0.107 (R)[10] · 10.49[11] · 10.61[12]

31824 Elatus, provisional designation 1999 UG5, is a dark centaur from the outer Solar System, approximately 48 kilometers in diameter. It was discovered on 29 October 1999, by astronomers of the Catalina Sky Survey at Mount Lemmon Observatory in Arizona, United States.[4] The minor planet was named after Elatus, a centaur from Greek mythology.[2]

Orbit and classification

Elatus orbits the Sun at a distance of 7.3–16.3 AU once every 40 years and 7 months (14,826 days). Its orbit has an eccentricity of 0.38 and an inclination of 5° with respect to the ecliptic.[1]

The body's observation arc begins with a precovery taken by the Sloan Digital Sky Survey at Apache Point Observatory in September 1998, thirteen months prior to its official discovery observation.[4]

Physical characteristics

Rotation period

Two rotational lightcurves of Elatus were obtained from photometric observations. Lightcurve analysis gave a longer-than-average rotation period of 26.5 and 26.82 hours with a concurring brightness variation of 0.10 magnitude (U=2/2).[7][8]

Diameter and albedo

According to observations by ESA's Herschel Space Observatory with its PACS instrument and the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer Elatus measures 49.8 and 57.000 kilometers in diameter and its surface has an albedo of 0.049 and 0.050, respectively.[5][6] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous minor planets of 0.057 and derives a diameter of 45.87 kilometers based on an absolute magnitude of 10.42.[3]

Naming

This minor planet was named after Elatus, a centaur from Greek mythology, who was killed during a battle with Heracles (also see 5143 Heracles) by a poisoned arrow that passed through his arm and continued to wound Chiron in the knee (also see 2060 Chiron). The name "Elatus" means means "fir man" and is associated with woodlands.[2] The official naming citation was published by the Minor Planet Center on 14 June 2003 (M.P.C. 49102).[13]

References

  1. ^ a b c d e "JPL Small-Body Database Browser: 31824 Elatus (1999 UG5)" (2009-04-18 last obs.). Jet Propulsion Laboratory. Retrieved 21 September 2017.
  2. ^ a b c Schmadel, Lutz D. (2006). Dictionary of Minor Planet Names – (31824) Elatus, Addendum to Fifth Edition: 2003–2005. Springer Berlin Heidelberg. p. 198. ISBN 978-3-540-34361-5. Retrieved 21 September 2017.
  3. ^ a b c d e f "LCDB Data for (31824) Elatus". Asteroid Lightcurve Database (LCDB). Retrieved 21 September 2017.
  4. ^ a b c "31824 Elatus (1999 UG5)". Minor Planet Center. Retrieved 21 September 2017.
  5. ^ a b c d Duffard, R.; Pinilla-Alonso, N.; Santos-Sanz, P.; Vilenius, E.; Ortiz, J. L.; Mueller, T.; et al. (April 2014). ""TNOs are Cool": A survey of the trans-Neptunian region. XI. A Herschel-PACS view of 16 Centaurs" (PDF). Astronomy and Astrophysics. 564: 17. arXiv:1309.0946. Bibcode:2014A&A...564A..92D. doi:10.1051/0004-6361/201322377. Retrieved 21 September 2017.
  6. ^ a b c Bauer, James M.; Grav, Tommy; Blauvelt, Erin; Mainzer, A. K.; Masiero, Joseph R.; Stevenson, Rachel; et al. (August 2013). "Centaurs and Scattered Disk Objects in the Thermal Infrared: Analysis of WISE/NEOWISE Observations" (PDF). The Astrophysical Journal. 773 (1): 11. arXiv:1306.1862. Bibcode:2013ApJ...773...22B. doi:10.1088/0004-637X/773/1/22. Retrieved 21 September 2017.
  7. ^ a b c Gutiérrez, P. J.; Ortiz, J. L.; Alexandrino, E.; Roos-Serote, M.; Doressoundiram, A. (June 2001). "Short term variability of Centaur 1999 UG5}". Astronomy and Astrophysics: L1–L4. Bibcode:2001A&A...371L...1G. doi:10.1051/0004-6361:20010418. Retrieved 21 September 2017.
  8. ^ a b c Bauer, James M.; Meech, Karen J.; Fernández, Yanga R.; Farnham, Tony L.; Roush, Ted L. (December 2002). "Observations of the Centaur 1999 UG5: Evidence of a Unique Outer Solar System Surface". The Publications of the Astronomical Society of the Pacific. 114 (802): 1309–1321. Bibcode:2002PASP..114.1309B. doi:10.1086/344586. Retrieved 21 September 2017.
  9. ^ Lowry, Stephen C.; Weissman, Paul R. (May 2007). "Rotation and color properties of the nucleus of Comet 2P/Encke" (PDF). Icarus. 188 (1): 212–223. arXiv:astro-ph/0612380. Bibcode:2007Icar..188..212L. doi:10.1016/j.icarus.2006.11.014. Retrieved 21 September 2017.
  10. ^ Peixinho, N.; Delsanti, A.; Guilbert-Lepoutre, A.; Gafeira, R.; Lacerda, P. (October 2012). "The bimodal colors of Centaurs and small Kuiper belt objects". Astronomy and Astrophysics. 546: 12. arXiv:1206.3153. Bibcode:2012A&A...546A..86P. doi:10.1051/0004-6361/201219057. Retrieved 21 September 2017.
  11. ^ Romanishin, W.; Tegler, S. C. (December 2005). "Accurate absolute magnitudes for Kuiper belt objects and Centaurs". Icarus. 179 (2): 523–526. Bibcode:2005Icar..179..523R. doi:10.1016/j.icarus.2005.06.016. Retrieved 21 September 2017.
  12. ^ Peixinho, N.; Lacerda, P.; Ortiz, J. L.; Doressoundiram, A.; Roos-Serote, M.; Gutiérrez, P. J. (May 2001). "Photometric study of Centaurs 10199 Chariklo (1997 CU26) and 1999 UG5". Astronomy and Astrophysics: 753–759. Bibcode:2001A&A...371..753P. doi:10.1051/0004-6361:20010382. Retrieved 21 September 2017.
  13. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 21 September 2017.
Retrieved from "https://en.wikipedia.org/w/index.php?title=31824_Elatus&oldid=801785221"