| Identity |
| Name: | zeta Ophiuchi |
| Hipparcos catalog ID: | 81377 |
| Other catalog entries: | HD 149757
SAO 160006
BD B-10 4350
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| Appearance |
| Visual magnitude: | 2.54 (source: Hipparcos) |
| Spectral type: | O9.5V |
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| Position and motion (Epoch J1991.25) in J2000 reference frame |
| R.A. | 16h 37m 9.53003s (+/-0.00005s) |
| Decl. | -10° 34' 1.7465" (+/-0.0005") |
| Parallax: | 7.12 (+/-0.71) |
| Derived distance: | 458 light years |
| Proper motion in R.A.: | 13.07 (+/-0.85) mas/year |
| Proper motion in decl.: | 25.44 (+/-0.72) mas/year |
| Constellation: | Ophiuchus | |
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| Notes |
Ref 93.186 and Ref 93.185: Multi-period object, small variations.
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