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Sim ya Palladi ce grupa asteroyidiv spektralnogo klasu sho ruhayutsya silno nahilenimi orbitami v centralnij chastini golovnogo poyasu Sim ya bula vidkrita she v 1928 roci yaponskim astronomom Kijocugu Hirayamoyu HarakteristikaRoztashuvannya ta struktura sim yi Palladi Asteroyid 2 Pallada ye drugim za rozmirom asteroyidom golovnogo poyasu iz serednim diametrom 550 km Inshi asteroyidi sim yi u bagato raziv postupayutsya jomu za rozmirami napriklad najbilshij z nih asteroyid 5222 Joffe maye v poperechniku lishe 22 km Perevazhna rozpovsyudzhenist sered chleniv sim yi asteroyidiv ridkisnogo spektralnogo klasu B i znachna riznicya v rozmirah Palladi ta inshih asteroyidiv svidchit sho cya sim ya yak i sim ya Vesti ye rezultatom velikogo zitknennya z Palladoyu inshogo asteroyida yakij udarivshis ob yiyi poverhnyu zalishiv na nij velikij krater i vibiv z Palladi bagato dribnih fragmentiv yaki utvorili sim yu Kolishnim chlenom sim yi Palladi mozhe buti asteroyid 3200 Faeton yakij ye dzherelom meteornogo potoku Geminidi Osnovnij diapazon vlasnih orbitalnih elementiv navedeno u nastupnij tablici a p e p i p min 2 71 a e 0 25 32 max 2 79 a e 0 31 34 Dlya danoyi astronomichnoyi epohi diapazon orbitalnih elementiv dlya oskulyuyuchih orbit dlya chleniv sim yi navedeno v tablici nizhche a e i min 2 71 a e 0 13 30 max 2 79 a e 0 37 38 PrimitkiCellino et al 2002 10 zhovtnya 2010 Arhiv originalu za 17 zhovtnya 2010 LiteraturaA Lemaitre amp A Morbidelli Proper elements for highly inclined asteroidal orbits Celestial Mechanics and Dynamical Astronomy Vol 60 pp 29 1994 Y Kozai Secular perturbations of asteroids and comets In Dynamics of the solar system Proceedings of the Symposium Tokyo Japan May 23 26 1978 Dordrecht D Reidel Publishing Co 1979 p 231 236 Discussion p 236 237 A Cellino et al Spectroscopic Properties of Asteroid Families in Asteroids III p 633 643 University of Arizona Press 2002 Table on page 636 in particular PosilannyaMPCORB orbit database
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