| 词条 | 5259 Epeigeus |
| 释义 |
| minorplanet = yes | name = 5259 Epeigeus | background = #C2FFFF | image = | image_size = | caption = | discovery_ref = [1] | discoverer = C. S. Shoemaker E. M. Shoemaker | discovery_site = Palomar Obs. | discovered = 30 January 1989 | mpc_name = (5259) Epeigeus | alt_names = {{mp|1989 BB|1}} | pronounced = {{IPAc-en|ᵻ|ˈ|p|aɪ|dʒ|i|ə|s}} {{Respell|i|PY|jee|əs}} | named_after = Epeigeus [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 = 38.18 yr (13,946 d) | aphelion = 5.5824 AU | perihelion = 4.8187 AU | semimajor = 5.2005 AU | eccentricity = 0.0734 | period = 11.86 yr (4,332 d) | mean_anomaly = 27.038° | mean_motion = {{Deg2DMS|0.0831|sup=ms}} / day | inclination = 15.921° | asc_node = 67.461° | arg_peri = 200.12° | jupiter_moid = 0.5047 AU | tisserand = 2.9180 | mean_diameter = {{val|42.59|4.4|ul=km}}[8] {{val|44.42|2.34|u=km}}[9] {{val|44.74|1.06|u=km}}[10] | rotation = {{val|18.42|0.03|ul=h}}[11] | albedo = {{val|0.069|0.008}}[9] {{val|0.073|0.007}}[10] {{val|0.0739|0.018}}[8] | spectral_type = D {{small|(Pan-STARRS)}}[15][16] D {{small|(SDSS-MOC)}}[17] | abs_magnitude = 10.2[10] 10.30[1][8][9][15] }}5259 Epeigeus, provisional designation {{mp|1989 BB|1}}, is a mid-sized Jupiter trojan from the Greek camp, approximately {{convert|44|km|mi|abbr=off|sigfig=2|sp=us}} in diameter. It was discovered on 30 January 1989, by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory in California.[1] The D-type asteroid has a rotation period of 18.4 hours.[15] It was named after the Myrmidon hero Epeigeus from Greek mythology.[1] Orbit and classificationEpeigeus 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 on its orbit {{cross reference|(see Trojans in astronomy)}}.[5] It is also a non-family asteroid of the Jovian background population.[6]It orbits the Sun at a distance of 4.8–5.6 AU once every 11 years and 10 months (4,332 days; semi-major axis of 5.2 AU). Its orbit has an eccentricity of 0.07 and an inclination of 16° with respect to the ecliptic. The body's observation arc begins with a precovery taken at the Siding Spring Observatory in March 1980, almost 8 years prior to its official discovery observation at Palomar.[1] Physical characteristicsIn the SDSS-based taxonomy, Epeigeus is a D-type asteroid.[17] It has also been characterized as a D-type by Pan-STARRS' survey.[15][16] It is the most common spectral type among the Jupiter trojans. Rotation periodIn August 1995, a rotational lightcurve of Epeigeus was obtained from photometric observations over five consecutive nights by Italian astronomer Stefano Mottola using the Bochum 0.61-metre Telescope at ESO's La Silla Observatory in Chile. Lightcurve analysis gave a rotation period of {{val|18.42|0.03}} hours with a low brightness amplitude of 0.10 magnitude ({{small|U=2}}).[11][15] Diameter and albedoAccording 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, Epeigeus measures between 42.59 and 44.74 kilometers in diameter and its surface has an albedo between 0.069 and 0.074.[8][9][10] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0738 and a diameter of 42.59 kilometers based on an absolute magnitude of 10.3.[15] {{Largest Jupiter trojans}}NamingThis minor planet was named from Greek mythology after the Greek warrior Epeigeus, who belonged to the Myrmidons commanded by Achilles. He was killed by Hector, who hit him upon the crest of his helmet with a great stone.[1] The official naming citation was published by the Minor Planet Center on 12 July 1995 ({{small|M.P.C. 25443}}).[41] References1. ^1 2 3 4 5 6 7 8 {{cite web |title = 5259 Epeigeus (1989 BB1) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=5259 |accessdate = 21 June 2018}} [1][2][3][4][5][6][7][8][9][10][11]2. ^1 2 {{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 = 21 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 = 21 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= 21 June 2018}} (online catalog) 5. ^1 2 {{cite web |title = Asteroid (5259) Epeigeus – Proper Elements |publisher = AstDyS-2, Asteroids – Dynamic Site |url = http://hamilton.dm.unipi.it/astdys/index.php?n=5259&pc=1.1.6 |access-date= 21 June 2018}} 6. ^1 2 {{Cite journal |first1 = J. M. |last1 = Carvano |first2 = P. H. |last2 = Hasselmann |first3 = D. |last3 = Lazzaro |first4 = T. |last4 = Mothé-Diniz |date = February 2010 |title = SDSS-based taxonomic classification and orbital distribution of main belt asteroids |url = https://sbnarchive.psi.edu/pds3/non_mission/EAR_A_I0035_5_SDSSTAX_V1_1/data/sdsstax_ast_table.tab |journal = Astronomy and Astrophysics |volume = 510 |page = 12 |bibcode = 2010A&A...510A..43C |doi = 10.1051/0004-6361/200913322 |access-date= 21 June 2018}} 7. ^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 = 21 June 2018}} 8. ^1 2 3 4 5 6 {{cite web |title = LCDB Data for (5259) Epeigeus |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=5259%7CEpeigeus |accessdate = 21 June 2018}} 9. ^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= 21 June 2018}} (online, [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153]) 10. ^1 2 {{cite journal |display-authors = 6 |first1 = Stefano |last1 = Mottola |first2 = Mario |last2 = Di Martino |first3 = Anders |last3 = Erikson |first4 = Maria |last4 = Gonano-Beurer |first5 = Albino |last5 = Carbognani |first6 = Uri |last6 = Carsenty |first7 = Gerhard |last7 = Hahn |first8 = Hans-Josef |last8 = Schober |first9 = Felix |last9 = Lahulla |first10 = Marco |last10 = Delbò |first11 = Claes-Ingvar |last11 = Lagerkvist |date = May 2011 |title = Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects |url = http://iopscience.iop.org/article/10.1088/0004-6256/141/5/170/pdf |journal = The Astronomical Journal |volume = 141 |issue = 5 |page = 32 |bibcode = 2011AJ....141..170M |doi = 10.1088/0004-6256/141/5/170 |access-date= 21 June 2018}} 11. ^1 2 {{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 = https://arxiv.org/pdf/1506.00762.pdf |journal = Icarus |volume = 261 |pages = 34–47 |bibcode = 2015Icar..261...34V |doi = 10.1016/j.icarus.2015.08.007 |arxiv = 1506.00762 |access-date= 21 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 1989 |
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