The scattered trans-Neptunian object 1998 XY95

被引:9
作者
Collander-Brown, SJ [1 ]
Fitzsimmons, A
Fletcher, E
Irwin, MJ
Williams, IP
机构
[1] Queens Univ Belfast, Dept Pure & Appl Phys, Belfast BT7 1NN, Antrim, North Ireland
[2] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England
[3] Univ London Queen Mary & Westfield Coll, Astron Unit, London E1 4NS, England
关键词
methods : numerical; techniques : photometric; celestial mechanics; comets : general;
D O I
10.1046/j.1365-8711.2001.04455.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
On 1998 December 12 a new trans-Neptunian object, 1998 XY95, was discovered as part of a deep search. Recent observations of this object have placed it amongst the class of objects known as the scattered trans-Neptunian objects (TNOs). A total of 39 CCD images of 1998 XY95 were taken over two nights, and these were used to search for a light curve, but no significant periodicity was found. An examination of the possible orbital evolution gives no indication of how it may have arrived on its present orbit. The current best-fitting orbit is unstable, but remains within a band of semi-major axis approximately 2 au wide. The bottom of this band is due to 3:1 mean motion resonance with Neptune, while the reason for the top of the band remains unclear.
引用
收藏
页码:972 / 978
页数:7
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