3709 Polypoites

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3709 Polypoites
Discovery[1]
Discovered byC. Shoemaker
Discovery sitePalomar Obs.
Discovery date14 October 1985
Designations
Pronunciation/pɒliˈpiːtiːz/[2]
Named after
Polypoites[3]
(Greek mythology)
Template:Mp · Template:Mp
Template:Mp · 1985 WK
Jupiter trojan[1][4][5]
Greek[6][7] · background[7]
AdjectivesPolypoitian
Orbital characteristics[4]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc46.17 yr (16,865 d)
Aphelion5.5573 AU
Perihelion4.9230 AU
5.2401 AU
Eccentricity0.0605
12.00 yr (4,381 d)
203.47°
Template:Deg2DMS / day
Inclination19.620°
187.12°
246.05°
Jupiter MOID0.0832 AU
TJupiter2.8800
Physical characteristics
65.30±0.89 km[8]
85.23±2.50 km[9]
99.01 km (derived)
99.09±15.1 km[10]
5.71±0.02 h (poor)[11]
9.989±0.007 h[12][a]
10.039±0.015 h[13][a]
10.069±0.015 h[13]
14.19±0.02 h[14][a]
43 h (poor)[15]
0.0413 (derived)[5]
0.0452±0.018[10]
0.062±0.004[9]
0.087±0.017[5][8]
C (assumed)[5]
D (S3OS2)[16]
V–I = 1.000±0.034[5]
9.00[9][10]
9.1[4][5]
9.2[8]
9.31±0.46[17]
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3709 Polypoites /pɒliˈpiːtiːz/ is a large Jupiter trojan from the Greek camp, approximately 85 kilometers (53 miles) in diameter. The Trojan asteroid was discovered on 14 October 1985, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California, United States,[1] and named after Polypoites from Greek mythology.[3] The dark D-type asteroid belongs to the 50 largest Jupiter trojans. It has a rotation period of 10 hours and possibly a spherical shape.[5]

Orbit and classification

Polypoites is a dark Jovian asteroid orbiting in the leading Greek camp at Jupiter's L4 Lagrangian point, 60° ahead of the Gas Giant's orbit in a 1:1 resonance (see Trojans in astronomy). It is also a non-family asteroid in the Jovian background population.[7][18]

It orbits the Sun at a distance of 4.9–5.6 AU once every 12.00 years (4,381 days; semi-major axis of 5.24 AU). Its orbit has an eccentricity of 0.06 and an inclination of 20° with respect to the ecliptic.[4] The asteroid was first observed as Template:Mp at Crimea–Nauchnij in July 1971. The body's observation arc begins at Palomar on 21 September 1985, just three weeks prior to its official discovery observation.[1]

Physical characteristics

In both the Tholen- and SMASS-like taxonomy of the Small Solar System Objects Spectroscopic Survey (S3OS2), Polypoites is a D-type asteroid.[16][18] It is also a generically assumed C-type asteroid.[5]

Rotation period

Between 2010 and 2017, several rotational lightcurves have been obtained from photometric observations by Robert Stevens at the Center for Solar System Studies in California.[11][12][13][14][a] Analysis of the best-rated lightcurve from April 2016 gave a period of 10.039 hours with a brightness variation of 0.12 magnitude (U=3).[5][13][a] A low brightness amplitude between 0.12 and 0.18 is also indicative of a rather spherical shape.[5]

These results supersede a period of 43 hours (U=1+) measured at the Calvin–Rehoboth and Calvin College observatories Template:Obscode in 2007.[15]

Diameter and albedo

Results from space-based surveys diverge significantly: according to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Polypoites measures between 65.30 and 99.09 kilometers in diameter and its surface has an albedo between 0.0452 and 0.087.[8][9][10]

The Collaborative Asteroid Lightcurve Link agrees with the results obtained by IRAS (11 observations) and derives a diameter of 99.01 kilometers with an albedo of 0.0413 based on an absolute magnitude of 9.1.[5]

Template:Largest Jupiter trojans

Naming

This minor planet was named from Greek mythology after the Greek hero Polypoites, who fought during the Trojan War. In a competition among the Greek warriors, he was able to throw an iron meteorite the farthest and won the game against Leonteus, after whom the minor planet 3793 Leonteus is named. On landing, the meteorite formed an impact crater.[3]

The asteroid's name was suggested by Dorothy and Jerome Preston, with the remark, that, had the Shoemakers been present, they would have examined the event closely. The official naming citation was published by the Minor Planet Center on 2 April 1988 (M.P.C. 12976).[3][19]

Notes

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  1. ^ a b c d e Lightcurve plots of (3709) Polypoites from Apr 2015, Apr 2016 and Jun 2017 by Robert Stephens at the Center for Solar System Studies Template:Obscode. Quality code is 2+/3-/3 (lightcurve rating at CS3). Summary figures at the LCDB and CS3.

References

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  1. ^ a b c d Page Module:Citation/CS1/styles.css has no content."3709 Polypoites (1985 TL3)". Minor Planet Center. Retrieved 8 June 2018.
  2. ^ 'Polypœtes' in Noah Webster (1884) A Practical Dictionary of the English Language
  3. ^ a b c d Page Module:Citation/CS1/styles.css has no content.Schmadel, Lutz D. (2007). "(3709) Polypoites". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 313. doi:10.1007/978-3-540-29925-7_3706. ISBN 978-3-540-00238-3.
  4. ^ a b c d Page Module:Citation/CS1/styles.css has no content."JPL Small-Body Database Browser: 3709 Polypoites (1985 TL3)" (2017-09-30 last obs.). Jet Propulsion Laboratory. Archived from the original on 30 November 2020. Retrieved 8 June 2018.
  5. ^ a b c d e f g h i j k Template:Cite LCDB
  6. ^ Page Module:Citation/CS1/styles.css has no content."List of Jupiter Trojans". Minor Planet Center. 30 May 2018. Retrieved 8 June 2018.
  7. ^ a b c Page Module:Citation/CS1/styles.css has no content."Asteroid (3709) Polypoites – Proper elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 8 June 2018.
  8. ^ a b c d Page Module:Citation/CS1/styles.css has no content.Grav, T.; Mainzer, A. K.; Bauer, J. M.; Masiero, J. R.; Nugent, C. R. (November 2012). "WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy". The Astrophysical Journal. 759 (1): 10. arXiv:1209.1549. Bibcode:2012ApJ...759...49G. doi:10.1088/0004-637X/759/1/49. S2CID 119101711. (online catalog)
  9. ^ a b c d Page Module:Citation/CS1/styles.css has no content.Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
  10. ^ a b c d Page Module:Citation/CS1/styles.css has no content.Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 15 June 2018.
  11. ^ a b Page Module:Citation/CS1/styles.css has no content.French, Linda M.; Stephens, Robert D.; Lederer, Susan M.; Coley, Daniel R.; Rohl, Derrick A. (April 2011). "Preliminary Results from a Study of Trojan Asteroids". The Minor Planet Bulletin. 38 (2): 116–120. Bibcode:2011MPBu...38..116F. ISSN 1052-8091. Retrieved 24 May 2016.
  12. ^ a b Page Module:Citation/CS1/styles.css has no content.Stephens, Robert D.; Warner, Brian D. (October 2017). "Lightcurve Analysis of L4 Trojan Asteroids at the Center for Solar System Studies 2017 April–June". The Minor Planet Bulletin. 44 (4): 312–316. Bibcode:2017MPBu...44..312S. ISSN 1052-8091. Retrieved 8 June 2018.
  13. ^ a b c d Page Module:Citation/CS1/styles.css has no content.Stephens, Robert D.; Coley, Daniel R.; Warner, Brian D.; French, Linda, M. (October 2016). "Lightcurves of Jovian Trojan Asteroids from the Center for Solar System Studies: L4 Greek Camp and Spies". The Minor Planet Bulletin. 43 (4): 323–331. Bibcode:2016MPBu...43..323S. ISSN 1052-8091. Retrieved 8 June 2018.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  14. ^ a b Page Module:Citation/CS1/styles.css has no content.Stephens, Robert D.; Coley, Daniel, R.; French, Linda M. (January 2016). "Large L5 Jovian Trojan Asteroid Lightcurves from the Center for Solar System Studies". The Minor Planet Bulletin. 43 (1): 15–22. Bibcode:2016MPBu...43...15S. ISSN 1052-8091. Retrieved 24 May 2016.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  15. ^ a b Page Module:Citation/CS1/styles.css has no content.Molnar, Lawrence A.; Haegert, Melissa, J.; Hoogeboom, Kathleen M. (June 2008). "Lightcurve Analysis of an Unbiased Sample of Trojan Asteroids". The Minor Planet Bulletin. 35 (2): 82–84. Bibcode:2008MPBu...35...82M. ISSN 1052-8091. Retrieved 24 May 2016.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  16. ^ a b Page Module:Citation/CS1/styles.css has no content.Lazzaro, D.; Angeli, C. A.; Carvano, J. M.; Mothé-Diniz, T.; Duffard, R.; Florczak, M. (November 2004). "S3OS2: the visible spectroscopic survey of 820 asteroids" (PDF). Icarus. 172 (1): 179–220. Bibcode:2004Icar..172..179L. doi:10.1016/j.icarus.2004.06.006. Retrieved 8 June 2018.
  17. ^ Page Module:Citation/CS1/styles.css has no content.Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. S2CID 53493339. Retrieved 24 May 2016.
  18. ^ a b Page Module:Citation/CS1/styles.css has no content."Asteroid 3709 Polypoites". Small Bodies Data Ferret. Retrieved 8 June 2018.
  19. ^ Page Module:Citation/CS1/styles.css has no content."MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 8 June 2018.

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