Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Fornax |
Right ascension | 02h 49m 54.1822s [1] |
Declination | −27° 56′ 31.123″ [1] |
Apparent magnitude (V) | 5.389 [2] |
Characteristics | |
Evolutionary stage | Main sequence [3] |
Spectral type | A1 V [4] |
B−V color index | 0.013±0.004 [5] |
Astrometry | |
Radial velocity (Rv) | 24.0±4.2 [6] km/s |
Proper motion (μ) |
RA: −47.053
[1]
mas/
yr Dec.: 20.932 [1] mas/ yr |
Parallax (π) | 6.3134 ± 0.1330 mas [1] |
Distance | 520 ± 10
ly (158 ± 3 pc) |
Absolute magnitude (MV) | −0.35 [5] |
Details | |
Mass | 2.40+0.44 −0.38 [2] M☉ |
Radius | 4.488 [7] R☉ |
Luminosity | 117.073±0.111 [7] L☉ |
Surface gravity (log g) | 3.50±0.25 [2] cgs |
Temperature | 9,000±500 [2] K |
Metallicity [Fe/H] | −0.02 [8] dex |
Rotational velocity (v sin i) | 149 [3] km/s |
Age | 401+138 −170 [2] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Gamma2 Fornacis, a name Latinized from γ2 Fornacis, is a single [10] star in the southern constellation Fornax. It has a white hue and is faintly visible to the naked eye at night with an apparent visual magnitude of 5.4. [2] The distance to Gamma2 Fornacis is approximately 520 light years based on parallax. [1] It is drifting further away with a radial velocity of 24 km/s. [6] Gamma1 Fornacis is a 6th magnitude star about four degrees to the north. [11]
The stellar classification of Gamma2 Fornacis is A1 V, [4] which is notation for an A-type main-sequence star that, like the Sun, is generating energy through core hydrogen fusion. Comparison of its properties to theoretical models suggest an age of about 400 [2] million years old. It has a high rate of spin, showing a projected rotational velocity of 149 km/s. [3] The star has 2.4 [2] times the mass of the Sun and 4.5 [7] times the Sun's radius. It is radiating 117 [7] times the luminosity of the Sun from its photosphere at an effective temperature of roughly 9,000 K. [2]
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Fornax |
Right ascension | 02h 49m 54.1822s [1] |
Declination | −27° 56′ 31.123″ [1] |
Apparent magnitude (V) | 5.389 [2] |
Characteristics | |
Evolutionary stage | Main sequence [3] |
Spectral type | A1 V [4] |
B−V color index | 0.013±0.004 [5] |
Astrometry | |
Radial velocity (Rv) | 24.0±4.2 [6] km/s |
Proper motion (μ) |
RA: −47.053
[1]
mas/
yr Dec.: 20.932 [1] mas/ yr |
Parallax (π) | 6.3134 ± 0.1330 mas [1] |
Distance | 520 ± 10
ly (158 ± 3 pc) |
Absolute magnitude (MV) | −0.35 [5] |
Details | |
Mass | 2.40+0.44 −0.38 [2] M☉ |
Radius | 4.488 [7] R☉ |
Luminosity | 117.073±0.111 [7] L☉ |
Surface gravity (log g) | 3.50±0.25 [2] cgs |
Temperature | 9,000±500 [2] K |
Metallicity [Fe/H] | −0.02 [8] dex |
Rotational velocity (v sin i) | 149 [3] km/s |
Age | 401+138 −170 [2] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Gamma2 Fornacis, a name Latinized from γ2 Fornacis, is a single [10] star in the southern constellation Fornax. It has a white hue and is faintly visible to the naked eye at night with an apparent visual magnitude of 5.4. [2] The distance to Gamma2 Fornacis is approximately 520 light years based on parallax. [1] It is drifting further away with a radial velocity of 24 km/s. [6] Gamma1 Fornacis is a 6th magnitude star about four degrees to the north. [11]
The stellar classification of Gamma2 Fornacis is A1 V, [4] which is notation for an A-type main-sequence star that, like the Sun, is generating energy through core hydrogen fusion. Comparison of its properties to theoretical models suggest an age of about 400 [2] million years old. It has a high rate of spin, showing a projected rotational velocity of 149 km/s. [3] The star has 2.4 [2] times the mass of the Sun and 4.5 [7] times the Sun's radius. It is radiating 117 [7] times the luminosity of the Sun from its photosphere at an effective temperature of roughly 9,000 K. [2]