Star profile
67 Ophiuchi
Hot blue starWhat is 67 Ophiuchi
67 Ophiuchi is a blue supergiant, one of those rare gems that lights Ophiuchus with a white-blue glare. Its B5 Ib class places it among the most luminous naked-eye stars: it radiates hundreds of times more energy than the Sun. The light grazing a human eye tonight departed there in the European Middle Ages, crossing more than a thousand years of dark before reaching the atmosphere.
Where it is and when to see it
67 Ophiuchi lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is June, when it culminates around midnight.
- From London it culminates about 41° above the horizon.
- From New York it culminates about 52° above the horizon.
- From Sydney it culminates about 53° above the horizon.
It can be seen from anywhere north of 87° S.
It ranks no. 14 in brightness among the 88 stars of Ophiuchus in our catalogue. To find it, start from Rasalhague, the brightest: it lies about 12° away (a fist at arm's length covers about 10°).
The light you see today left it about 1,200 years ago.
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Astronomical data for 67 Ophiuchi
- Constellation
- Ophiuchus
- Apparent magnitude
- 3.93
- Distance
- 1230.9 light years
- Coordinates (J2000)
- RA 270.161° · Dec 2.932°
- Catalogue
- HIP 88192 · HD 164353
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Other stars in Ophiuchus
Ophiuchus has 88 stars in Stelvia's catalogue. Here are a few of them.
- RasalhagueAlpha Ophiuchi2.08
- SabikEta Ophiuchi2.43
- Zeta Ophiuchi2.54
- 72 Ophiuchi3.71
- Gamma Ophiuchi3.75
- MarfikLambda Ophiuchi3.82
- 70 Ophiuchi4.03
- 44 Ophiuchi4.16