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HD 90757


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Identification of moving groups and member selection using HIPPARCOS data
A new method to identify coherent structures in velocity space - movinggroups - in astrometric catalogues is presented: the Spaghetti method.It relies on positions, parallaxes and proper motions, and is ideallysuited to searching for moving groups in the Hipparcos Catalogue. Noradial-velocity information is required. The method has been testedextensively on synthetic data, and applied to the Hipparcos measurementsfor the Hyades and IC 2602 open clusters. The resulting lists of membersagree very well with those of Perryman et al. for the Hyades and thoseof Whiteoak & Braes for IC 2602.

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观测天体数据

星座:船帆座
右阿森松:10h27m29.36s
赤纬:-53°40'36.1"
视星:8.115
距离:146.843 天文距离
右阿森松适当运动:-104.9
赤纬适当运动:64.6
B-T magnitude:9.41
V-T magnitude:8.222

目录:
适当名称   (Edit)
HD 1989HD 90757
TYCHO-2 2000TYC 8601-3265-1
USNO-A2.0USNO-A2 0300-09683719
HIPHIP 51202

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