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HD 240312


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UBV beta Database for Case-Hamburg Northern and Southern Luminous Stars
A database of photoelectric UBV beta photometry for stars listed in theCase-Hamburg northern and southern Milky Way luminous stars surveys hasbeen compiled from the original research literature. Consisting of over16,000 observations of some 7300 stars from over 500 sources, thisdatabase constitutes the most complete compilation of such photometryavailable for intrinsically luminous stars around the Galactic plane.Over 5000 stars listed in the Case-Hamburg surveys still lackfundamental photometric data.

Photoelectric photometry of OB stars in the Vilnius system
Not Available

The distribution of early-type stars and dust around L = 114 deg
Photoelectric H-beta photometry is presented for about 125 early-typestars in a 12-sq deg area centered at l = 114 deg, b = 1.5 deg. Moststars were previously measured in UBV. The study of the color excessesof the stars shows that a dust cloud covers part of the area. This cloudis situated about 1.5 kpc from the sun. Except for that cloud the onlycolor excess found in the area originates within 1 kpc from the sun. Thefrequency maximum of OB stars is found between a distance of 2 and 4kpc, which is the intersection with the Perseus arm.

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Observation and Astrometry data

Constellation:Cassiopeia
Right ascension:23h29m30.13s
Declination:+59°36'12.8"
Apparent magnitude:8.28
Distance:353.357 parsecs
Proper motion RA:7.8
Proper motion Dec:-2.3
B-T magnitude:8.715
V-T magnitude:8.316

Catalogs and designations:
Proper Names
HD 1989HD 240312
TYCHO-2 2000TYC 4011-964-1
USNO-A2.0USNO-A2 1425-15151808
HIPHIP 115950
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