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词条 3709 Polypoites
释义

  1. Orbit and classification

  2. Physical characteristics

      Rotation period    Diameter and albedo  

  3. Naming

  4. Notes

  5. References

  6. External links

{{Infobox planet
| minorplanet = yes
| name = 3709 Polypoites
| background = #C2FFFF
| image =
| image_size =
| caption =
| discovery_ref =  [1]
| discovered = 14 October 1985
| discoverer = C. Shoemaker
| discovery_site = Palomar Obs.
| mpc_name = (3709) Polypoites
| alt_names = {{mp|1985 TL|3}}{{·}}{{mp|1971 OK|1}}
{{mp|1979 HQ|2}}{{·}}1985 WK
| pronounced = {{IPAc-en|ˌ|p|ɒ|l|iː|ˈ|p|iː|t|iː|z}}
{{respell|POL|ee|PEE|teez}}
| named_after = Polypoites [2]
{{small|(Greek mythology)}}
| mp_category = Jupiter trojan [1][5]
{{nowrap|Greek [6][7]{{·}}background [7]}}
| orbit_ref =  
| epoch = 23 March 2018 (JD 2458200.5)
| uncertainty = 0
| observation_arc = 46.17 yr (16,865 d)
| aphelion = 5.5573 AU
| perihelion = 4.9230 AU
| semimajor = 5.2401 AU
| eccentricity = 0.0605
| period = 12.00 yr (4,381 d)
| mean_anomaly = 203.47°
| mean_motion = {{Deg2DMS|0.0822|sup=ms}} / day
| inclination = 19.620°
| asc_node = 187.12°
| arg_peri = 246.05°
| jupiter_moid = 0.0832 AU
| tisserand = 2.8800
| mean_diameter = {{val|65.30|0.89|ul=km}}[10]
{{val|85.23|2.50|u=km}}[11]
{{val|99.01|u=km}} {{small|(derived)}}
{{val|99.09|15.1|u=km}}[12]
| rotation = {{val|5.71|0.02|ul=h}} {{small|(poor)}}[13]
{{val|9.989|0.007|u=h}}[14]{{efn|name=lightcurve-plots-Stephens}}
{{val|10.039|0.015|u=h}}[15]{{efn|name=lightcurve-plots-Stephens}}
{{val|10.069|0.015|u=h}}[15]
{{val|14.19|0.02|u=h}}[17]{{efn|name=lightcurve-plots-Stephens}}
{{val|43|u=h}} {{small|(poor)}}[18]
| albedo = {{val|0.0413}} {{small|(derived)}}[5]
{{val|0.0452|0.018}}[12]
{{val|0.062|0.004}}[11]
{{val|0.087|0.017}}[5][10]
| spectral_type = C {{small|(assumed)}}[5]
D {{small|(S3OS2)}}[25]
V–I {{=}} {{val|1.000|0.034}}[5]
| abs_magnitude = 9.00[11][12]
9.1[5]
9.2[10]
{{val|9.31|0.46}}[32]
}}3709 Polypoites ({{IPAc-en|ˌ|p|ɒ|l|iː|ˈ|p|iː|t|iː|z}} {{respell|POL|ee|PEE|teez}}), provisional designation {{mp|1985 TL|3}}, is a large Jupiter trojan from the Greek camp, approximately {{convert|85|km|mi|abbr=off|sigfig=2|sp=us}} 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.[2] 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][37]

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. The asteroid was first observed as {{mp|1971 OK|1}} 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.[25][37] 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.[13][14][15][17]{{efn|name=lightcurve-plots-Stephens}} Analysis of the best-rated lightcurve from April 2016 gave a period of 10.039 hours with a brightness variation of 0.12 magnitude ({{small|U=3}}).[5][15]{{efn|name=lightcurve-plots-Stephens}} 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 ({{small|U=1+}}) measured at the Calvin–Rehoboth and Calvin College observatories {{Obscode|H62}} in 2007.[18]

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.[10][11][12]

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]

{{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.[2]

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 ({{small|M.P.C. 12976}}).[2][57]

Notes

{{notelist|refs={{efn|name=lightcurve-plots-Stephens|1=Lightcurve plots of (3709) Polypoites from Apr 2015, Apr 2016 and Jun 2017 by Robert Stephens at the Center for Solar System Studies {{Obscode|U81}}. Quality code is 2+/3-/3 (lightcurve rating at CS3). Summary figures at the LCDB and CS3.}}

}}

References

1. ^1 2 3 4 {{cite book |title = Dictionary of Minor Planet Names – (3709) Polypoites |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 313 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_3706 |chapter = (3709) Polypoites }}
2. ^1 2 3 4 {{cite web |title = 3709 Polypoites (1985 TL3) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=3709 |accessdate = 8 June 2018}}
3. ^1 {{cite web |title = MPC/MPO/MPS Archive |work = Minor Planet Center |url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |accessdate = 8 June 2018}}
4. ^1 {{cite web |title = List of Jupiter Trojans |work = Minor Planet Center |date = 30 May 2018 |url = https://www.minorplanetcenter.net/iau/lists/JupiterTrojans.html |accessdate = 8 June 2018}}
5. ^1 2 3 4 {{cite journal |first1 = T. |last1 = Grav |first2 = A. K. |last2 = Mainzer |first3 = J. M. |last3 = Bauer |first4 = J. R. |last4 = Masiero |first5 = C. R. |last5 = Nugent |date = November 2012 |title = WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy |journal = The Astrophysical Journal |volume = 759 |issue = 1 |page = 10 |bibcode = 2012ApJ...759...49G |doi = 10.1088/0004-637X/759/1/49 |arxiv = 1209.1549 }} (online catalog)
6. ^1 2 3 {{cite web |title = Asteroid (3709) Polypoites – Proper elements |publisher = AstDyS-2, Asteroids – Dynamic Site |url = http://hamilton.dm.unipi.it/astdys/index.php?n=3709&pc=1.1.6 |accessdate = 8 June 2018}}
7. ^1 2 {{cite web |title = Asteroid 3709 Polypoites |work = Small Bodies Data Ferret |url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=3709+Polypoites |accessdate = 8 June 2018}}
8. ^1 2 3 4 {{cite journal |first1 = E. F. |last1 = Tedesco |first2 = P. V. |last2 = Noah |first3 = M. |last3 = Noah |first4 = S. D. |last4 = Price |date = October 2004 |title = IRAS Minor Planet Survey V6.0 |url = https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab |journal = NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0 |pages = IRAS-A-FPA-3-RDR-IMPS-V6.0 |bibcode = 2004PDSS...12.....T |accessdate = 15 June 2018}}
9. ^1 2 {{Cite journal |first1 = D. |last1 = Lazzaro |first2 = C. A. |last2 = Angeli |first3 = J. M. |last3 = Carvano |first4 = T. |last4 = Mothé-Diniz |first5 = R. |last5 = Duffard |first6 = M. |last6 = Florczak |date = November 2004 |title = S3OS2: the visible spectroscopic survey of 820 asteroids |url = http://sirrah.troja.mff.cuni.cz/yarko-site/tmp/eos/NEW/spectral_type_figure/s3os2.pdf |journal = Icarus |volume = 172 |issue = 1 |pages = 179–220 |bibcode = 2004Icar..172..179L |doi = 10.1016/j.icarus.2004.06.006 |access-date= 8 June 2018}}
10. ^1 2 3 4 5 6 7 8 9 10 11 {{cite web |title = LCDB Data for (3709) Polypoites |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=3709%7CPolypoites |accessdate = 8 June 2018}}
11. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = Fumihiko |last1 = Usui |first2 = Daisuke |last2 = Kuroda |first3 = Thomas G. |last3 = Müller |first4 = Sunao |last4 = Hasegawa |first5 = Masateru |last5 = Ishiguro |first6 = Takafumi |last6 = Ootsubo |first7 = Daisuke |last7 = Ishihara |first8 = Hirokazu |last8 = Kataza |first9 = Satoshi |last9 = Takita |first10 = Shinki |last10 = Oyabu |first11 = Munetaka |last11 = Ueno |first12 = Hideo |last12 = Matsuhara |first13 = Takashi |last13 = Onaka |date = October 2011 |title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey |url = http://pasj.oxfordjournals.org/content/63/5/1117.full.pdf+html |journal = Publications of the Astronomical Society of Japan |volume = 63 |issue = 5 |pages = 1117–1138 |bibcode = 2011PASJ...63.1117U |doi = 10.1093/pasj/63.5.1117 |access-date= 15 June 2018}} (online, [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153])
12. ^1 2 {{Cite journal |first1 = Lawrence A. |last1 = Molnar |first2 = Melissa, J. |last2 = Haegert |first3 = Kathleen M. |last3 = Hoogeboom |date = June 2008 |title = Lightcurve Analysis of an Unbiased Sample of Trojan Asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35...82M |journal = The Minor Planet Bulletin |volume = 35 |issue = 2 |pages = 82–84 |issn = 1052-8091 |bibcode = 2008MPBu...35...82M |access-date= 24 May 2016}}
13. ^1 2 {{Cite journal |first1 = Linda M. |last1 = French |first2 = Robert D. |last2 = Stephens |first3 = Susan M. |last3 = Lederer |first4 = Daniel R. |last4 = Coley |first5 = Derrick A. |last5 = Rohl |date = April 2011 |title = Preliminary Results from a Study of Trojan Asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38..116F |journal = The Minor Planet Bulletin |volume = 38 |issue = 2 |pages = 116–120 |issn = 1052-8091 |bibcode = 2011MPBu...38..116F |access-date= 24 May 2016}}
14. ^1 2 {{Cite journal |first1 = Robert D. |last1 = Stephens |first2 = Daniel, R. |last2 = Coley |first3 = Linda M. |last3 = French |date = January 2016 |title = Large L5 Jovian Trojan Asteroid Lightcurves from the Center for Solar System Studies |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016MPBu...43...15S |journal = The Minor Planet Bulletin |volume = 43 |issue = 1 |pages = 15–22 |issn = 1052-8091 |bibcode = 2016MPBu...43...15S |access-date= 24 May 2016}}
15. ^1 2 3 4 {{Cite journal |first1 = Robert D. |last1 = Stephens |first2 = Daniel R. |last2 = Coley |first3 = Brian D. |last3 = Warner |first4 = Linda, M. |last4 = French |date = October 2016 |title = Lightcurves of Jovian Trojan Asteroids from the Center for Solar System Studies: L4 Greek Camp and Spies |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016MPBu...43..323S |journal = The Minor Planet Bulletin |volume = 43 |issue = 4 |pages = 323–331 |issn = 1052-8091 |bibcode = 2016MPBu...43..323S |access-date= 8 June 2018}}
16. ^1 2 {{Cite journal |first1 = Robert D. |last1 = Stephens |first2 = Brian D. |last2 = Warner |date = October 2017 |title = Lightcurve Analysis of L4 Trojan Asteroids at the Center for Solar System Studies 2017 April-June |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2017MPBu...44..312S |journal = The Minor Planet Bulletin |volume = 44 |issue = 4 |pages = 312–316 |issn = 1052-8091 |bibcode = 2017MPBu...44..312S |access-date= 8 June 2018}}
17. ^1 {{cite journal |display-authors = 6 |first1 = Peter |last1 = Veres |first2 = Robert |last2 = Jedicke |first3 = Alan |last3 = Fitzsimmons |first4 = Larry |last4 = Denneau |first5 = Mikael |last5 = Granvik |first6 = Bryce |last6 = Bolin |first7 = Serge |last7 = Chastel |first8 = Richard J. |last8 = Wainscoat |first9 = William S. |last9 = Burgett |first10 = Kenneth C. |last10 = Chambers |first11 = Heather |last11 = Flewelling |first12 = Nick |last12 = Kaiser |first13 = Eugen A. |last13 = Magnier |first14 = Jeff S. |last14 = Morgan |first15 = Paul A. |last15 = Price |first16 = John L. |last16 = Tonry |first17 = Christopher |last17 = Waters |date = November 2015 |title = Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V |journal = Icarus |volume = 261 |pages = 34–47 |bibcode = 2015Icar..261...34V |doi = 10.1016/j.icarus.2015.08.007 |arxiv = 1506.00762 |access-date= 24 May 2016}}
[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]

}}

External links

  • Asteroid Lightcurve Database (LCDB), query form (info)
  • [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
  • Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
  • {{AstDys|3709}}
  • {{JPL small body}}
{{Use dmy dates|date=June 2018}}{{Minor planets navigator |(3708) 1974 FV1 |number=3709 |3710 Bogoslovskij}}{{Small Solar System bodies}}{{DEFAULTSORT:Polypoites}}

5 : Jupiter trojans (Greek camp)|Discoveries by Carolyn S. Shoemaker|Minor planets named from Greek mythology|Named minor planets|Astronomical objects discovered in 1985
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