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Theta1 Sagittarii

Proper NameNone
Bayer DesignationTheta1 Sagittarii
Flamsteed NumberNone
HR (BSC)7623
Right Ascension19h 59m 44s
Declination-35° 16' 35"
Distance519 light years
159 parsecs
MagnitudeApparent: +4.36
Absolute: -1.65
Spectral ClassB3IV blue subgiant
Optimum VisibilityAugust

Blue Theta1 Sagittarii is one of two stars in Sagittarius bearing the 'Theta' designation, though these two stars are unrelated except that they lie relatively close to one another in the sky. The other 'Theta' star, the rather fainter Theta2 Sagittarii, is thirty-four arcminutes to the north from Theta1, and can been seen on this image by zooming out slightly. Imagery provided by Aladin sky atlas


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