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HD 45644


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Broad-band photometry of selected southern ultraviolet-bright stars.
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A survey of ultraviolet objects
An all-sky survey of ultraviolet objects is presented together with astatistical analysis that leads to the conclusion that there is asignificantly higher population of hot subdwarfs lying below themain-sequence than hitherto thought. The distribution of all ultravioletobjects, main sequence ultraviolet objects, and MK unclassifiedultraviolet objects are shown in galactic coordinates, and the absolutemagnitudes and color-color diagrams for these groups are presented.Scale heights are derived, giving values similar to planetary nebulaefor the hottest groups.

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Observation and Astrometry data

Constellation:Canis Major
Right ascension:06h27m31.79s
Declination:-26°04'39.0"
Apparent magnitude:8.782
Distance:1923.077 parsecs
Proper motion RA:-4.6
Proper motion Dec:4.5
B-T magnitude:8.669
V-T magnitude:8.773

Catalogs and designations:
Proper Names
HD 1989HD 45644
TYCHO-2 2000TYC 6511-1832-1
USNO-A2.0USNO-A2 0600-03419178
HIPHIP 30739

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