| 词条 | 12714 Alkimos |
| 释义 |
| minorplanet = yes | name = 12714 Alkimos | background = #C2FFFF | image = | image_size = | caption = | discovery_ref = [1] | discoverer = C. S. Shoemaker E. M. Shoemaker | discovery_site = Palomar Obs. | discovered = 15 April 1991 | mpc_name = (12714) Alkimos | alt_names = {{mp|1991 GX|1}}{{·}}{{mp|1990 EY|1}} | pronounced = {{IPAc-en|ˈ|æ|l|k|ᵻ|m|ə|s}}{{·}}{{Respell|AL|kə|məs}} | named_after = Alcimus [1] {{small|(Greek mythology)}} | mp_category = Jupiter trojan [1] {{nowrap|Greek [5]{{·}}background [6]}} | orbit_ref = | epoch = 23 March 2018 (JD 2458200.5) | uncertainty = 0 | observation_arc = 26.36 yr (9,629 d) | aphelion = 5.4180 AU | perihelion = 5.0443 AU | semimajor = 5.2312 AU | eccentricity = 0.0357 | period = 11.96 yr (4,370 d) | mean_anomaly = 197.17° | mean_motion = {{Deg2DMS|0.0824|sup=ms}} / day | inclination = 9.5083° | asc_node = 298.90° | arg_peri = 164.29° | jupiter_moid = 0.1981 AU | tisserand = 2.9710 | mean_diameter = {{val|47.82|1.16|ul=km}}[8] {{val|54.62|4.20|u=km}}[9] {{val|61.04|5.4|u=km}}[10] | rotation = {{val|28.48|0.01|ul=h}}[11] | albedo = {{val|0.036|0.007}}[10] {{val|0.045|0.007}}[9] {{val|0.070|0.014}}[8] | spectral_type = C {{small|(assumed)}}[15] | abs_magnitude = 10.1[1][8] 10.30[9][10] }}12714 Alkimos ({{IPAc-en|ˈ|æ|l|k|ᵻ|m|ə|s}} {{Respell|AL|kə|məs}}), provisional designation {{mp|1991 GX|1}}, is a large Jupiter trojan from the Greek camp, approximately {{convert|54|km|mi|abbr=off|sigfig=2|sp=us}} in diameter. It was discovered on 15 April 1991, by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory in California.[1] The dark Jovian asteroid has a rotation period of 28.5 hours.[15] It was named from Greek mythology after Alcimus, son of Ares and companion of Achilles.[1] Orbit and classificationAlkimos is a dark Jovian asteroid in a 1:1 orbital resonance with Jupiter. It is located in the leading Greek camp at the Gas Giant's {{L4}} Lagrangian point, 60° ahead of its orbit {{cross reference|(see Trojans in astronomy)}}. It is also a non-family asteroid in the Jovian background population.[6]It orbits the Sun at a distance of 5.0–5.4 AU once every 12 years (4,370 days; semi-major axis of 5.23 AU). Its orbit has an eccentricity of 0.04 and an inclination of 10° with respect to the ecliptic. The body's observation arc begins with its first observation at the La Silla Observatory in February 1990, or 14 months prior to its official discovery observation at Palomar.[1] Physical characteristicsAlkimos is an assumed C-type asteroid, while most larger Jupiter trojans are D-types.[15]Rotation periodIn January 2012, a rotational lightcurve of Alkimos was obtained from photometric observations by Robert Stephens at GMARS {{Obscode|G79}} in California. Lightcurve analysis gave a rotation period of {{val|28.48|0.01}} hours with a brightness amplitude of 0.27 magnitude ({{small|U=3-}}).[15][11] Diameter and albedoAccording to the surveys carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the Japanese Akari satellite and the Infrared Astronomical Satellite IRAS, Alkimos measures between 47.82 and 61.04 kilometers in diameter and its surface has an albedo between 0.036 and 0.070.[8][9][10] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0431 and a diameter of 61.13 kilometers based on an absolute magnitude of 10.1.[15] {{Largest Jupiter trojans}}NamingThis minor planet was named from Greek mythology after the hero Alcimus, son of Ares. After Patroclus had died, he and Automedon were the two most favored by Achilles.[1] The official naming citation was published by the Minor Planet Center on 13 October 2000 ({{small|M.P.C. 41386}}).[35] References1. ^1 2 3 4 5 6 7 8 {{cite web |title = 12714 Alkimos (1991 GX1) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=12714 |accessdate = 23 June 2018}} [1][2][3][4][5][6][7][8][9]2. ^1 {{cite web |title = List of Jupiter Trojans |work = Minor Planet Center |first3 = V. |last3 = Carruba |date = 1 June 2018 |url = https://www.minorplanetcenter.net/iau/lists/JupiterTrojans.html |accessdate = 23 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 = 23 June 2018}} 4. ^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 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759...49G |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 |access-date= 23 June 2018}} (online catalog) 5. ^1 2 {{cite web |title = Asteroid (12714) Alkimos – Proper Elements |publisher = AstDyS-2, Asteroids – Dynamic Site |url = http://hamilton.dm.unipi.it/astdys/index.php?n=12714&pc=1.1.6 |access-date= 23 June 2018}} 6. ^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 |bibcode = 2004PDSS...12.....T |accessdate = 23 June 2018}} 7. ^1 2 3 4 5 {{cite web |title = LCDB Data for (12714) Alkimos |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=12714%7CAlkimos |accessdate = 23 June 2018}} 8. ^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= 23 June 2018}} (online, [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153]) 9. ^1 2 {{Cite journal |first1 = Linda M. |last1 = French |first2 = Robert D. |last2 = Stephens |first3 = Daniel R. |last3 = Coley |first4 = Ralph |last4 = Megna |first5 = Lawrence H. |last5 = Wasserman |date = July 2012 |title = Photometry of 17 Jovian Trojan Asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012MPBu...39..183F |journal = The Minor Planet Bulletin |volume = 39 |issue = 3 |pages = 183–187 |issn = 1052-8091 |bibcode = 2012MPBu...39..183F |access-date= 23 June 2018}} }} External links
6 : Jupiter trojans (Greek camp)|Discoveries by Carolyn S. Shoemaker|Discoveries by Eugene Merle Shoemaker|Minor planets named from Greek mythology|Named minor planets|Astronomical objects discovered in 1991 |
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