Star
Sabik
White star · A2.5Va
η Ophiuchi · Ophiuchus
Shown in its true colour — like most stars, it is too far away to photograph as more than a point of light.
Eta Ophiuchi is a binary star in the constellation of Ophiuchus. Its name is a Bayer designation that is Latinized from η Ophiuchi, and abbreviated Eta Oph or η Oph. With a combined apparent magnitude of +2.43, it is the second-brightest of the constellation and one of the brightest stars in the night sky. Based on parallax measurements taken during the Hipparcos mission, it is approximately 88 light-years away.
Description from Wikipedia (CC BY-SA 4.0).
In your sky
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Key facts
Distance
~88.4 light-years
Apparent mag.
+2.43
Spectral type
A2.5Va
Luminosity
68.2 × Sun
Absolute mag.
+0.27
Catalogue
HIP 84012
Spectral type
A2.5Va
True colour from its B–V index (0.06): a surface around 9400 K.
Did you know
- Sabik is also known as η Ophiuchi.
- Its spectral type A2.5Va marks it as a white star.
- It lies in the constellation Ophiuchus.
