Alpha Ophiuchi

Also known as α Oph, Rasalhague, α Ophiuchi, GJ 681, HIC 86032, HIP 86032, HD 159561, HR 6556

star in the constellation Ophiuchus

Key facts

Constellation: Ophiuchus
Right ascension: 17 34 56.06945
Declination: +12 ° 33 ′ 36.1346 ″
Evolutionary stage: Main sequence
Spectral type: A5IVnn + K5–7 V
U b color index: +0.10
B v color index: +0.15

via Wikipedia infobox

Wikidata facts

Diameter: 4130000
Radius: 2.6
Image: Ophiuchus constellation map.png

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Article

Alpha Ophiuchi (α Ophiuchi, abbreviated Alpha Oph, α Oph), also named Rasalhague /ˈræsəlheɪɡ/, is a binary star and the brightest star in the constellation of Ophiuchus. Five degrees west-north-west of Rasalhague lies Rasalgethi, one of the brightest stars in the nearby constellation Hercules.

Nomenclature