3 Geminorum
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Gemini |
| Right ascension | 06h 09m 43.98481s |
| Declination | +23° 06′ 48.4677″ |
| Apparent magnitude (V) | 5.75 |
| Characteristics | |
| Spectral type | B3 Ia |
| Variable type | Alpha Cygni variable |
| Astrometry | |
| Radial velocity (Rv) | 16.00 ± 4.3 km/s |
| Proper motion (μ) | RA: -0.92 ± 0.75 mas/yr Dec.: -2.65 ± 0.49 mas/yr |
| Parallax (π) | 0.23 ± 0.88 mas |
| Other designations | |
3 Geminorum is a highly luminous blue supergiant star in the constellation Gemini. It was found to be an Alpha Cygni variable in 1998.[1]
References
- ↑ Waelkens, C.; Aerts, C.; Kestens, E.; Grenon, M.; Eyer, L. (1998). "Study of an unbiased sample of B stars observed with Hipparcos: the discovery of a large amount of new slowly pulsating B star". Astronomy and Astrophysics 330: 215–21. Bibcode:1998A&A...330..215W.
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