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Hipparcos Star Catalog Entry
| Identity | |
| Name: | Betelgeuse, alpha Orionis |
| Hipparcos catalog ID: | 27989 |
| Other catalog entries: |
HD 39801
SAO 113271 BD B+07 1055 |
| Appearance | |
| Visual magnitude: | 0.45 (source: Hipparcos) |
| Spectral type: | M2Ib |
| Position and motion (Epoch J1991.25) in J2000 reference frame | |
| R.A. | 5h 55m 10.28919s (+/-0.00010s) |
| Decl. | 7° 24' 25.3308" (+/-0.0011") |
| Parallax: | 7.63 (+/-1.64) |
| Derived distance: | 427 light years |
| Proper motion in R.A.: | 27.33 (+/-2.3) mas/year |
| Proper motion in decl.: | 10.86 (+/-1.46) mas/year |
| Constellation: | Orion |
| Notes | |
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Variations on time scale of 400d. | |
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