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4791 Iphidamas
4791 Iphidamas /ɪˈfɪdəməs/ is a Jupiter trojan from the Trojan camp, approximately 58 kilometers (36 miles) in diameter. It was discovered on 14 August 1988, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California.[1] The dark Jovian asteroid belongs the 100 largest Jupiter trojans and has a rotation period of 9.7 hours.[10] It was named after the Trojan warrior Iphidamas, from Greek mythology.[1] Orbit and classificationIphidamas is a dark Jupiter trojan in a 1:1 orbital resonance with Jupiter. It is located in the trailering Trojan camp at the Gas Giant's L5 Lagrangian point, 60° behind its orbit .[4] It is also a non-family asteroid of the Jovian background population.[5] It orbits the Sun at a distance of 4.9–5.4 AU once every 11 years and 9 months (4,281 days; semi-major axis of 5.16 AU). Its orbit has an eccentricity of 0.05 and an inclination of 26° with respect to the ecliptic.[3] The body's observation arc begins with its official discovery observation at Palomar in August 1988.[1] Physical characteristicsIphidamas is an assumed, carbonaceous C-type asteroid. It has a high V–I color index of 1.03 (see table below).[10] Rotation periodIn 2014 and 2015, two rotational lightcurves of Iphidamas were obtained from photometric observations by Robert Stephens at the Center for Solar System Studies in Landers, California. Analysis of the best-rated lightcurve from December 2015 showed a rotation period of 9.696±0.006 hours with a brightness amplitude of 0.31 magnitude (U=3),[9][12][a] superseding a previous period determination by Stefano Mottola at the La Silla Observatory from February 1992, which gave a similar period of 9.57 hours (U=2+).[10][13] Diameter and albedoAccording to the surveys carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the Infrared Astronomical Satellite IRAS, and the Japanese Akari satellite, Iphidamas measures between 49.528 and 59.96 kilometers in diameter and its surface has an albedo between 0.055 and 0.079.[6][7][8] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0483 and a diameter of 57.74 kilometers based on an absolute magnitude of 10.1.[10]
100+ largest Jupiter trojans
NamingThis minor planet was named from Greek mythology after the Trojan warrior Iphidamas, son of Theano and Antenor, who was the counselor of King Priam. During the Trojan War, he confronted Agamemnon in battle, but his spear bent against Agamemnon's war belt, who then killed Iphidamas with his sword.[1] The official naming citation was published by the Minor Planet Center on 27 June 1991 (M.P.C. 18465).[14] NotesReferences
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pl ar de en es fr it arz nl ja pt ceb sv uk vi war zh ru af ast az bg zh-min-nan bn be ca cs cy da et el eo eu fa gl ko hi hr id he ka la lv lt hu mk ms min no nn ce uz kk ro simple sk sl sr sh fi ta tt th tg azb tr ur zh-yue hy my ace als am an hyw ban bjn map-bms ba be-tarask bcl bpy bar bs br cv nv eml hif fo fy ga gd gu hak ha hsb io ig ilo ia ie os is jv kn ht ku ckb ky mrj lb lij li lmo mai mg ml zh-classical mr xmf mzn cdo mn nap new ne frr oc mhr or as pa pnb ps pms nds crh qu sa sah sco sq scn si sd szl su sw tl shn te bug vec vo wa wuu yi yo diq bat-smg zu lad kbd ang smn ab roa-rup frp arc gn av ay bh bi bo bxr cbk-zam co za dag ary se pdc dv dsb myv ext fur gv gag inh ki glk gan guw xal haw rw kbp pam csb kw km kv koi kg gom ks gcr lo lbe ltg lez nia ln jbo lg mt mi tw mwl mdf mnw nqo fj nah na nds-nl nrm nov om pi pag pap pfl pcd krc kaa ksh rm rue sm sat sc trv stq nso sn cu so srn kab roa-tara tet tpi to chr tum tk tyv udm ug vep fiu-vro vls wo xh zea ty ak bm ch ny ee ff got iu ik kl mad cr pih ami pwn pnt dz rmy rn sg st tn ss ti din chy ts kcg ve
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