| Identity |
| Name: | chi Ophiuchi |
| Hipparcos catalog ID: | 80569 |
| Other catalog entries: | HD 148184
SAO 159918
BD B-18 4282
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| |
| Appearance |
| Visual magnitude: | 4.22 (source: Hipparcos) |
| Spectral type: | B2Vne |
| |
| Position and motion (Epoch J1991.25) in J2000 reference frame |
| R.A. | 16h 27m 1.43831s (+/-0.00005s) |
| Decl. | -18° 27' 22.3091" (+/-0.0005") |
| Parallax: | 6.67 (+/-0.74) |
| Derived distance: | 489 light years |
| Proper motion in R.A.: | -5.58 (+/-0.88) mas/year |
| Proper motion in decl.: | -22.22 (+/-0.7) mas/year |
| Constellation: | Ophiuchus | |
| |
| Notes |
One drop in brightness half-way the mission, 0.15 mag.
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