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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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Observation and Astrometry data

Constellation:Fluss Eridanus
Right ascension:03h19m46.51s
Declination:-18°50'39.4"
Apparent magnitude:7.049
Distance:230.415 parsecs
Proper motion RA:24.1
Proper motion Dec:5.9
B-T magnitude:7.152
V-T magnitude:7.058

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 20728
TYCHO-2 2000TYC 5875-359-1
USNO-A2.0USNO-A2 0675-01147124
HIPHIP 15504

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