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HD 21971


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Pulkovo compilation of radial velocities for 35495 stars in a common system.
Not Available

Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.
We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.

A second list of wide visual binaries
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A second list of wide visual binaries
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A Spectroscopic Study of NGC 188.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1964ApJ...140..673G&db_key=AST

Radial Velocities, Spectral Types, and Luminosity Classes of 820 Stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1950ApJ...112...48M&db_key=AST

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Osservazione e dati astrometrici

Costellazione:Giraffa
Ascensione retta:03h36m03.82s
Declinazione:+63°17'17.3"
Magnitudine apparente:7.387
Distanza:769.231 parsec
Moto proprio RA:5.1
Moto proprio Dec:2.2
B-T magnitude:9.688
V-T magnitude:7.577

Cataloghi e designazioni:
Nomi esatti
HD 1989HD 21971
TYCHO-2 2000TYC 4066-848-1
USNO-A2.0USNO-A2 1500-03248256
HIPHIP 16789

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