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HD 196687

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Photoelectric Photometry of Herbig Ae/be and Related Stars in the Vilnius Photometric System A catalog of photoelectric photometry of 62 Herbig Ae/Be and relatedstars in the Vilnius system is presented. It contains stars down to V =12 mag located mainly in the northern hemisphere and observed in theperiod of 1994--1996.
UvbyHbeta_ photometry of main sequence A type stars. We present Stroemgren uvby and Hbeta_ photometry for a set of575 northern main sequence A type stars, most of them belonging to theHipparcos Input Catalogue, with V from 5mag to 10mag and with knownradial velocities. These observations enlarge the catalogue we began tocompile some years ago to more than 1500 stars. Our catalogue includeskinematic and astrophysical data for each star. Our future goal is toperform an accurate analysis of the kinematical behaviour of these starsin the solar neighbourhood.
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.
Photoelectric Photometry of Stars in the Vilnius System in the Area of the North America and Pelican Nebulae Not Available
VI photometry of selected SAO stars Johnson V- and I-band photoelectric photometry has been obtained for 158SAO stars in a continuing program in support of the Near InfraredPhotographic Sky Survey. These data are utilized in the calibration ofthe survey photographs and are presented here to assist other programsreliant upon access to photometry in the photographic infrared.
Classificazione spettrale con prisma obiettivo di stelle del complesso Orione Not Available
The Empirical Mass-Luminosity Relation. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1963ApJS....8..125E&db_key=AST

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观测天体数据

星座:	天鵝座
右阿森松:	20^h37^m23.00^s
赤纬:	+42Â°59'28.3"
视星:	7.256
距离:	406.504 天文距离
右阿森松适当运动:	5.9
赤纬适当运动:	2.7
B-T magnitude:	7.151
V-T magnitude:	7.248

目录:

适当名称
HD 1989	HD 196687
TYCHO-2 2000	TYC 3161-183-1
USNO-A2.0	USNO-A2 1275-14024603
HIP	HIP 101755

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