  | |
| Observation data EpochJ2000.0 EquinoxJ2000.0 (ICRS) | |
|---|---|
| Constellation | Norma |
| Right ascension | 16h 17m 00.93411s[1] |
| Declination | −50° 04′ 05.2333″[1] |
| Apparent magnitude (V) | 4.98[2] |
| Characteristics | |
| Evolutionary stage | Supergiant |
| Spectral type | F9 Ia[3] |
| U−Bcolor index | +0.49[2] |
| B−Vcolor index | +0.80[2] |
| Astrometry | |
| Radial velocity (Rv) | −16.0±5.1[4] km/s |
| Proper motion (μ) | RA: −1.69[1]mas/yr Dec.: −3.39[1]mas/yr |
| Parallax (π) | 2.22±0.27 mas[1] |
| Distance | approx. 1,500 ly (approx. 450 pc) |
| Absolute magnitude (MV) | -3.62[3] |
| Details | |
| Mass | 6.6±0.4[5] M☉ |
| Radius | 160[6] R☉ |
| Luminosity | 2039.91[7] L☉ |
| Surface gravity (log g) | 2.0[8] cgs |
| Temperature | 6,068[8] K |
| Metallicity [Fe/H] | −0.13[8] dex |
| Age | 53.4±7.4[5] Myr |
| Other designations | |
| γ Nor,CD−49° 10474,HD 146143,HIP 79790,HR 6058,SAO 226619 | |
| Database references | |
| SIMBAD | data |
Gamma1 Normae,Latinized fromγ1 Normae, is a single,[9] yellow-white huedstar in the southernconstellation ofNorma. It is faintly visible to the naked eye with anapparent visual magnitude of 4.98.[2] The annualparallax shift is only2.22±0.27 mas as measured from Earth,[1] which yields a rough distance estimate of 1,500 light years from the Sun. It is moving closer to the Sun with aradial velocity of around -16 km/s.[4]
This is anF-typesupergiant star with astellar classification of F9 Ia[3] It has 6.6[5] times themass of the Sun and has expanded to about 160[6] times theSun's radius. The star is radiating 2,040[7] times theSun's luminosity from its enlargedphotosphere at aneffective temperature of 6,068 K.[8] It is estimated to be around 53 million years old.[5]
γ2 Nor is a nearby star nearly a magnitude brighter.
