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Theta1 Crucis

Proper NameNone
Bayer DesignationTheta1 Crucis
Flamsteed NumberNone
HR (BSC)4599
Right Ascension12h 3m 2s
Declination-63° 18' 47"
Distance235 light years
72 parsecs
MagnitudeApparent: +4.32
Absolute: +0.03
Spectral ClassA4V white main sequence star
Optimum VisibilityApril (Usually visible from southern latitudes)

The blue star to the northeast of Theta1 Crucis is Theta2 Crucis, a much more distant but also much more luminous subgiant star. Falling within the band of the Milky Way, these two stars have a rich starfield as their backdrop, with the particularly dense region to the northwest being the open cluster Collinder 251. Imagery provided by Aladin sky atlas


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