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HD 6581

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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.
Revised list of pulsating stars with ultra-short periods A comprehensive list of 178 known Delta Scuti and RR Lyrae-stars ispresented. Using this revised list a HR diagram for these ultra shortperiod pulsating stars is plotted and the blue and red edges of theresultant instability strip are determined. Selection effects arediscussed, and the PLC relationship of Breger (1979) is tested usingdata from this list. Stars lying outside the defined instability regionare discussed.
Spectral and photometric observations of fast irregular variable stars. II - H-alpha and H-beta lines in the spectra of WW Vul, VX Cas, and UX ORI Not Available
La mesure des vitesses radiales AU prisme objectif.11 Revision et resultats nouveaux dans la SA 8. Not Available
Photoelectric Observations of Stars near Northern Hemisphere Selected Areas Not Available
La mesure des vitesses radiales au prisme objectif. XII. 5ème Liste de vitesses radiales déterminées au prisme objectif à vision directe Not Available
Étude spectrophotométrique et statistique d'une région obscure dans Cassiopée Not Available

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Observation and Astrometry data

Constellation:	Cassiopeia
Right ascension:	01^h07^m54.26^s
Declination:	+62Â°20'07.1"
Apparent magnitude:	8.545
Distance:	297.619 parsecs
Proper motion RA:	14.1
Proper motion Dec:	-9.3
B-T magnitude:	8.695
V-T magnitude:	8.558

Catalogs and designations:

Proper Names	(Edit)
HD 1989	HD 6581
TYCHO-2 2000	TYC 4021-1208-1
USNO-A2.0	USNO-A2 1500-01158232
HIP	HIP 5307

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