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HD 94635


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Photometry of astrometric reference stars
UBVRI, DDO, and uvby, H-beta photometry of astrometric reference starsis presented. Spectral types and luminosity classifications made fromthe colors are used to determine their spectroscopic parallaxes. In thispaper, colors for 309 stars in 25 regions are given, and classificationsfor 210 stars have been made. These stars form reference frames in theAllegheny Observatory Multichannel Astrometric Photometer astrometricprogram, and in the Praesepe cluster reduced by Russell (1976). It isfound that the present photometric spectral types are reliable to within2.5 spectral subclasses.

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Observation and Astrometry data

Constellation:Leo
Right ascension:10h55m38.97s
Declination:+06°57'43.7"
Apparent magnitude:9.137
Proper motion RA:-3.4
Proper motion Dec:5.5
B-T magnitude:9.572
V-T magnitude:9.173

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 94635
TYCHO-2 2000TYC 261-797-1
USNO-A2.0USNO-A2 0900-06806183
HIPHIP 53420

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