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Proper NameNone
Bayer DesignationTheta Ophiuchi
Flamsteed Number42 Ophiuchi
HR (BSC)6453
HD157056
ConstellationOphiuchus
Right Ascension17h 22m 1s
Declination-24° 59' 58"
Distance436 light years
134 parsecs
MagnitudeApparent: +3.25
Absolute: -2.38
Spectral ClassB2IV Blue Subgiant
Optimum VisibilityJune / July

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