Gamma2 Normae
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Norma |
| Right ascension | 16h 19m 50.42227s [1] |
| Declination | −50° 09′ 19.8223″ [1] |
| Apparent magnitude (V) | 4.02[1] |
| Characteristics | |
| Spectral type | G8III[1] |
| Astrometry | |
| Radial velocity (Rv) | −28.90 ± 0.7[1] km/s |
| Proper motion (μ) | RA: -159.71 [1] mas/yr Dec.: -52.25[1] mas/yr |
| Parallax (π) | 25.33 ± 0.20 mas[2] |
| Distance | 129 ± 1 ly (39.5 ± 0.3 pc) |
| Other designations | |
Gamma2 Normae (γ2 Nor) is the brightest star in the constellation Norma. Its apparent magnitude is 4.02. Located 129 ± 1 light-years away from Earth,[2] it is a yellow giant of spectral type G8III around 2 to 2.5 times as massive as the Sun that has swollen to a diameter 10 times that of the Sun. It is itself a close optical double, with a magnitude 10 companion star related by line of sight only.[3]
References
- ^ a b c d e f g h SIMBAD, HR 6072 (accessed 22 December 2012)
- ^ a b van Leeuwen, F. (2007). "Validation of the New Hipparcos Reduction". Astronomy and Astrophysics. 474 (2): 653–64. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
- ^ Kaler, James B. "Gamma-2 Normae". Stars. University of Illinois. Retrieved 23 March 2015.
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