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HD 20728


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Hyades and Sirius supercluster members brighter than magnitude(V) 7.1. I - The first six hours of right ascension
This is the first of four papers listing the probable members of theHyades and Sirius superclusters among stars brighter than V = 7.1 mag.The star sample is contained in the Bright Star Catalogue and itsSupplement, augmented with a further supplement of 550 stars foundduring various observing programs over the past 40 years. Accurate,four-color and H-beta, or (RI), photometry is available for most of thesupercluster members. The criteria for membership are the comparisons ofthe proper motion, radial velocity, and luminosity obtained from thesupercluster parameters with the observed motions and the luminosityderived from the photometric parameters. New proper motions, based onall available catalogs, have been derived for the additional 550 starsdiscussed here, as well as for all supercluster members.

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观测天体数据

星座:波江座
右阿森松:03h19m46.51s
赤纬:-18°50'39.4"
视星:7.049
距离:230.415 天文距离
右阿森松适当运动:24.1
赤纬适当运动:5.9
B-T magnitude:7.152
V-T magnitude:7.058

目录:
适当名称   (Edit)
HD 1989HD 20728
TYCHO-2 2000TYC 5875-359-1
USNO-A2.0USNO-A2 0675-01147124
HIPHIP 15504

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