HD 189831
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 20h 03m 33.45912s[1] |
| Declination | −37° 56′ 26.5236″[1] |
| Apparent magnitude (V) | 4.77[2] |
| Characteristics | |
| Spectral type | K5III[3] |
| U−B color index | +1.68[4] |
| B−V color index | +1.41[4] |
| Absolute magnitude (MV) | -0.48[2] |
| Details | |
Rotational velocity (v sin i) | < 1.0[7] km/s |
SAO 211767 | |
| Database references | |
| SIMBAD | data |
HD 189831 is a class K5III[3] (orange giant) star in the constellation Sagittarius. Its apparent magnitude is 4.77[2] and it is approximately 366 light years away based on parallax.[1]
References
- ^ S2CID 18759600. Vizier catalog entry
- ^ S2CID 119257644. Vizier catalog entry
- ^ Bibcode:1995yCat.5050....0H.
- ^
- LCCN 54001336.
- S2CID 119258214.
- S2CID 54046583. Vizier catalog entry
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