B-Oph (Star)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
From Cambridge , b-Oph is visible in the dawn sky, rising at 00:59 (EDT) and reaching an altitude of 23° above the southern horizon before fading from view as dawn breaks at around 05:14.
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Name
B-Oph
|
Object type
Star
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Other names
Position
| Right ascension: | 17h26m22s [4] |
| Declination: | −24°10'32" [4] |
| Constellation: | Ophiuchus |
| Magnitude: Variable | 4.16 (V) [2] 4.50 (BT) [2] 4.19 (VT) [2] 4.10 (G) [4] 4.24 (BP) [4] 3.85 (RP) [4] |
| Distance: | 25.0 parsec 81.4 lightyrs [4] |
| B-V Color (mag): | 0.26 |
| Proper motion (speed): | 117.4 mas/yr[4] |
| Proper motion (pos ang): | 180.9° |
Derived quantities
| Absolute mag (V): | 2.17 |
Sources