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词条 1583 Antilochus
释义

  1. Classification and orbit

      Asteroid pair  

  2. Naming

  3. Physical characteristics

      Rotation period    Diameter and albedo  

  4. Notes

  5. References

  6. External links

{{Infobox planet
| minorplanet = yes
| name = 1583 Antilochus
| background = #C2FFFF
| image =
| image_size =
| caption =
| discovery_ref =  [1]
| discoverer = S. Arend
| discovery_site = Uccle Obs.
| discovered = 19 September 1950
| mpc_name = (1583) Antilochus
| alt_names = 1950 SA{{·}}1926 VF
{{mp|1974 WH|1}}
| pronounced = {{IPAc-en|æ|n|ˈ|t|ɪ|l|ə|k|ə|s}}
{{respell|ann|TIL|ə|kəs}}
| named_after = Antilochus
{{small|(Greek mythology)}}[2]
| 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 = 91.53 yr (33,430 d)
| aphelion = 5.3959 AU
| perihelion = 4.8644 AU
| semimajor = 5.1301 AU
| eccentricity = 0.0518
| period = 11.62 yr (4,244 d)
| mean_anomaly = 256.95°
| mean_motion = {{Deg2DMS|0.0848|sup=ms}} / day
| inclination = 28.512°
| asc_node = 221.38°
| arg_peri = 187.27°
| jupiter_moid = 0.0264 AU
| tisserand = 2.7570
| mean_diameter = {{val|101.62|3.2|ul=km}}[10]
{{val|108.84|0.54|u=km}}[11]
{{val|111.69|3.86|u=km}}[12]
| rotation = {{val|15.889|0.005|ul=h}}[13]{{efn|name=lightcurve-plots-Stephens}}
| albedo = {{val|0.053|0.004}}[12]
{{val|0.054|0.004}}[11]
{{val|0.0633|0.004}}[10]
| spectral_type = D {{small|(Tholen)}}[5][18]
D0 {{small|(Barucci)}}[18]
D {{small|(Tedesco)}}[18]
U–B {{=}} {{val|0.253|038}}[18]
B–V {{=}} {{val|0.752|020}}[18]
V–I {{=}} {{val|0.950|0.043}}[5]
BR {{=}} {{val|1.220|0.109}}[5]
| abs_magnitude = 8.58[10]
{{val|8.59|0.06}}[5][27][28]
8.60[1][11][12]
}}

1583 Antilochus ({{IPAc-en|æ|n|ˈ|t|ɪ|l|ə|k|ə|s}} {{respell|ann|TIL|ə|kəs}}), provisional designation {{mp|1950 SA}}, is a large Jupiter trojan from the Greek camp, approximately {{convert|108|km|mi|abbr=off|sp=us}} in diameter. It was discovered on 19 September 1950, by Belgian astronomer Sylvain Arend at Uccle Observatory in Belgium, and later named after the hero Antilochus from Greek mythology.[1] The dark D-type asteroid belongs to the 20 largest Jupiter trojans and has a rotation period of 15.9 hours.[5] It forms an asteroid pair with 3801 Thrasymedes.

Classification and orbit

Antilochus 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 {{cross reference|(see Trojans in astronomy)}}.[6] It is also a non-family asteroid in the Jovian background population.[7]

It orbits the Sun at a distance of 4.9–5.4 AU once every 11 years and 7 months (4,244 days; semi-major axis of 5.13 AU). Its orbit has an eccentricity of 0.05 and an inclination of 29° with respect to the ecliptic. The asteroid was first observed as {{mp|1926 VF}} at Heidelberg Observatory in November 1926. The body's observation arc begins with its official discovery observation at Uccle in September 1950.[1]

Asteroid pair

In 1993, Andrea Milani suggested that Antilochus forms an asteroid pair with 3801 Thrasymedes, using the hierarchical clustering method (HCM), which looks for groupings of neighboring asteroids based on the smallest distances between them in the proper orbital element space.[39] Asteroid pairs, which at some point in the past had very small relative velocities, are typically formed by a collisional break-up of a parent body. Alternatively, they may have been former binary asteroids which became gravitationally unbound and are now following similar but different orbits around the Sun.[40]

The astronomer describes the finding as statistically significant though difficult to account for by a regular collisional event.[39]{{efn|name=Milani-trojan-family}} The Antilochus–Thrasymedes pair is not listed at the Johnston's archive.[40]

Naming

This minor planet was named after prince Antilochus from Greek mythology. He was the youngest son of King Nestor ({{mp|{{MoMP|659|659 Nestor}}}}), close friend of Greek hero Achilles ({{mp|{{MoMP|588|588 Achilles}}}}) and commander of the Greek contingent of the Pylians during the Trojan War.[2] The official naming citation was published before November 1977 ({{small|M.P.C. 770}}).[44]

Physical characteristics

In the Tholen, Barucci and Tesco classification, Antilochus is a dark D-type asteroid,[18] with a V–I color index of 0.95.[5] The D-type is the most common spectral type among the Jupiter trojans.

Rotation period

In December 2009 and June 2016, rotational lightcurves of Antilochus were obtained from photometric observations by American astronomer Robert Stephens at the Santana Observatory {{Obscode|646}} and at the Center for Solar System Studies (CS3) in California. Lightcurve analysis gave a rotation period of 31.52 and 31.54 hours with an amplitude of 0.09 and 0.11 magnitude, respectively ({{small|U=2/2}}).[47][48] Follow-up observations over a total of 11 nights by Stephens in August 2017 gave the so-far best-rated lightcurve with a period of {{val|15.889|0.005}} hours – which corresponds to half the period solution of the former results – and a slightly higher brightness variation of 0.12 magnitude ({{small|U=2+}}).[13]{{efn|name=lightcurve-plots-Stephens}}

Stephen's period determination supersedes previously reported results by Vincenzo Zappalà (1985; 12 h), Federico Manzini (2007; 12 h) and René Roy (2009; 22.5 h) ({{small|U=3−/3}}).[5][51][52]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Antilochus measures between 101.62 and 111.69 kilometers in diameter and its surface has an albedo between 0.053 and 0.063.[10][11][12] The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0633 and a diameter of 101.62 kilometers, with Pravec's revised absolute magnitude of 8.59.[5]

{{Largest Jupiter trojans}}

Notes

{{notelist|30em|refs={{efn|name=lightcurve-plots-Stephens|1=Lightcurve plots of (1583) Antilochus from Jun 2016 and Aug 2017 by Robert Stephens at the Center for Solar System Studies {{Obscode|U81}}. Quality code is 3/2+ (lightcurve rating at CS3). Summary figures at the LCDB and CS3.}}{{efn|name=Milani-trojan-family|1=Besides the asteroid pair Antilochus—Thrasymedes, Milani found five potential asteroid families in the Greek camp, clustered around the Jovian asteroids 1437 Diomedes, 1647 Menelaus, 2456 Palamedes, 2797 Teucer and {{mpl|(4035) 1986 WD}}, respectively (Milani 1993, p. 94).}}

}}

References

1. ^1 2 {{cite book |title = Dictionary of Minor Planet Names – (1583) Antilochus |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 125 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1584 |chapter = (1583) Antilochus }}
2. ^1 2 3 4 5 {{cite web |title = 1583 Antilochus (1950 SA) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1583 |accessdate = 13 June 2018}}
3. ^1 2 {{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 = 13 June 2018}}
4. ^1 {{cite web |title = MPC/MPO/MPS Archive |work = Minor Planet Center |url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |accessdate = 13 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 (1583) Antilochus – Proper elements |publisher = AstDyS-2, Asteroids – Dynamic Site |url = http://hamilton.dm.unipi.it/astdys/index.php?n=1583&pc=1.1.6 |accessdate = 13 June 2018}}
7. ^1 2 3 4 5 6 {{cite web |title = Asteroid 1583 Antilochus |work = Small Bodies Data Ferret |url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1583+Antilochus |accessdate = 13 June 2018}}
8. ^1 {{cite web |title = Asteroids and comets rotation curves – (1583) Antilochus |last = Behrend |first = Raoul |publisher = Geneva Observatory |url = http://obswww.unige.ch/~behrend/page4cou.html#001583 |accessdate = 13 June 2018}}
9. ^1 2 {{Cite journal |author = Milani, Andrea |date = October 1993 |title = The Trojan asteroid belt: Proper elements, stability, chaos and families |url = http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1993CeMDA..57...59M&data_type=PDF_HIGH |journal = Celestial Mechanics and Dynamical Astronomy |volume = 57 |issue = 1–2 |pages = 59–94 |issn = 0923-2958 |bibcode = 1993CeMDA..57...59M |doi = 10.1007/BF00692462 |access-date= 30 June 2018}}
10. ^1 2 {{cite web |title = Asteroid pairs and clusters |work = Johnston's Archive |date = 29 April 2018 |author = Johnston, Wm. Robert |url = http://www.johnstonsarchive.net/astro/asteroidpairs.html |accessdate = 30 June 2018}}
11. ^1 2 3 4 5 6 7 8 9 {{cite web |title = LCDB Data for (1583) Antilochus |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1583%7CAntilochus |accessdate = 13 June 2018}}
12. ^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}}
13. ^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= 13 June 2018}} (online, [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153])
14. ^1 {{Cite journal |first1 = V. |last1 = Zappala |first2 = M. |last2 = di Martino |first3 = A. |last3 = Cellino |first4 = G. |last4 = de Sanctis |first5 = P. |last5 = Farinella |date = December 1989 |title = Rotational properties of outer belt asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1989Icar...82..354Z |journal = Icarus |volume = 82 |issue = 2 |pages = 354–368.ResearchsupportedbyCNRandMPI |issn = 0019-1035 |bibcode = 1989Icar...82..354Z |doi = 10.1016/0019-1035(89)90043-2 |access-date= 25 April 2017}}
15. ^1 {{Cite journal |author = Stephens, Robert D. |date = April 2010 |title = Trojan Asteroids Observed from GMARS and Santana Observatories: 2009 October – December |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2010MPBu...37...47S |journal = The Minor Planet Bulletin |volume = 37 |issue = 2 |pages = 47–48 |issn = 1052-8091 |bibcode = 2010MPBu...37...47S |access-date= 25 April 2017}}
16. ^1 {{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= 25 April 2017}}
17. ^1 2 {{Cite journal |first1 = Robert D. |last1 = Stephens |first2 = Brian D. |last2 = Warner |date = January 2018 |title = Lightcurve Analysis of L4 Trojan Asteroids at the Center for Solar System Studies 2017 July - September |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2018MPBu...45...48S |journal = The Minor Planet Bulletin |volume = 45 |issue = 1 |pages = 48–50 |issn = 1052-8091 |bibcode = 2018MPBu...45...48S |access-date= 30 June 2018}}
18. ^1 {{Cite journal |first1 = W. Z. |last1 = Wisniewski |first2 = T. M. |last2 = Michalowski |first3 = A. W. |last3 = Harris |first4 = R. S. |last4 = McMillan |date = March 1995 |title = Photoelectric Observations of 125 Asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1995LPI....26.1511W |journal = Abstracts of the Lunar and Planetary Science Conference |volume = 26 |pages = 1511 |bibcode = 1995LPI....26.1511W |access-date= 25 April 2017}}
19. ^1 {{Cite journal |first1 = Petr |last1 = Pravec |first2 = Alan W. |last2 = Harris |first3 = Peter |last3 = Kusnirák |first4 = Adrián |last4 = Galád |first5 = Kamil |last5 = Hornoch |date = September 2012 |title = Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012Icar..221..365P |journal = Icarus |volume = 221 |issue = 1 |pages = 365–387 |bibcode = 2012Icar..221..365P |doi = 10.1016/j.icarus.2012.07.026 |access-date= 25 April 2017}}
[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]

}}

External links

  • [https://ssd.jpl.nasa.gov/sbdb_query.cgi?obj_group=all;obj_kind=all;obj_numbered=all;OBJ_field=0;ORB_field=0;combine_mode=OR;c1_group=OBJ;c1_item=Ay;c1_op=%3D;c1_value=D;c2_group=OBJ;c2_item=Ax;c2_op=%3D;c2_value=D;table_format=HTML;max_rows=100;format_option=comp;c_fields=AcBhBgBjBiBnBsAiArApAxAy;.cgifields=format_option;.cgifields=combine_mode;.cgifields=ast_orbit_class;.cgifields=obj_kind;.cgifields=table_format;.cgifields=obj_group;.cgifields=obj_numbered;.cgifields=com_orbit_class&query=1&c_sort=ApD Query: D-type asteroid in the SBDB], Jet Propulsion Laboratory
  • Asteroid Lightcurve Database (LCDB), query form (info)
  • [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
  • Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
  • Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
  • {{AstDys|1583}}
  • {{JPL small body}}
{{Use dmy dates|date=June 2018}}{{Minor planets navigator|1582 Martir|number=1583|1584 Fuji}}{{Small Solar System bodies}}{{DEFAULTSORT:Antilochus}}

6 : Jupiter trojans (Greek camp)|Discoveries by Sylvain Arend|Minor planets named from Greek mythology|Named minor planets|D-type asteroids (Tholen)|Astronomical objects discovered in 1950
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