| Identity |
| Name: | mu Sagittarii |
| Hipparcos catalog ID: | 89341 |
| Other catalog entries: | HD 166937
SAO 186497
BD B-21 4908
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| Appearance |
| Visual magnitude: | 3.84 (source: Tycho) |
| Spectral type: | B2III: |
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| Position and motion (Epoch J1991.25) in J2000 reference frame |
| R.A. | 18h 13m 45.80871s (+/-0.00006s) |
| Decl. | -21° 3' 31.7891" (+/-0.0006") |
| Parallax: | 0.11 (+/-0.98) |
| Derived distance: | 29651 light years |
| Proper motion in R.A.: | 1.72 (+/-0.87) mas/year |
| Proper motion in decl.: | -1.39 (+/-0.64) mas/year |
| Constellation: | Sagittarius | |