Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Pavo |
Right ascension | 21h 26m 26.60484s [1] |
Declination | −65° 21′ 58.3145″ [1] |
Apparent magnitude (V) | 4.22 [2] |
Characteristics | |
Spectral type | F9 V Fe-1.4 CH-0.7 [3] |
U−B color index | −0.13 [4] |
B−V color index | +0.48 [4] |
Variable type | Suspected |
Astrometry | |
Radial velocity (Rv) | −29.9 [5] km/s |
Proper motion (μ) |
RA: +80.56
[1]
mas/
yr Dec.: +800.60 [1] mas/ yr |
Parallax (π) | 107.97 ± 0.19 mas [1] |
Distance | 30.21 ± 0.05
ly (9.26 ± 0.02 pc) |
Absolute magnitude (MV) | 4.40 [5] |
Details | |
Mass | 1.21±0.12 [6] M☉ |
Radius | 1.15±0.04 [6] R☉ |
Luminosity | 1.52±0.05 [6] L☉ |
Surface gravity (log g) | 4.3 [2] cgs |
Temperature | 6,112 [2] K |
Metallicity [Fe/H] | –0.80 [2] dex |
Rotational velocity (v sin i) | 1.0±0.6 [6] km/s |
Age | 1.0 [5] or 7.25 [7] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Gamma Pavonis, Latinized from γ Pavonis, is a star in the southern circumpolar constellation of Pavo. With an apparent visual magnitude of 4.22, [2] it is a fourth-magnitude star and thereby visible to the naked eye. From parallax observations with the Hipparcos satellite, the distance to this star has been estimated at 30.21 light-years (9.26 parsecs). [1] It is drifting closer to the Sun with a radial velocity of −30 km/s. [5]
Compared to the Sun, this star has a 21% greater mass and a 15% larger radius. It is a brighter star with 152% of the Sun's luminosity, [6] which is it radiating from the outer envelope at an effective temperature of 6,112 K. [2] The stellar classification of F9 V [3] puts it in the class of F-type main sequence stars that generate energy through the nuclear fusion of hydrogen at the core. It is a metal-poor star, which means it has a low abundance of elements heavier than helium. Age estimates range from a low of a billion [5] years up to 7.25 billion years. [7] Gamma Pavonis is orbiting through the Milky Way at an unusually high peculiar velocity relative to nearby stars.[ citation needed]
This star has rank 14 on TPF-C's top 100 target stars to search for a rocky planet in the Habitable Zone, approximately 1.2 AU, or a little beyond an Earth-like orbit.
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Pavo |
Right ascension | 21h 26m 26.60484s [1] |
Declination | −65° 21′ 58.3145″ [1] |
Apparent magnitude (V) | 4.22 [2] |
Characteristics | |
Spectral type | F9 V Fe-1.4 CH-0.7 [3] |
U−B color index | −0.13 [4] |
B−V color index | +0.48 [4] |
Variable type | Suspected |
Astrometry | |
Radial velocity (Rv) | −29.9 [5] km/s |
Proper motion (μ) |
RA: +80.56
[1]
mas/
yr Dec.: +800.60 [1] mas/ yr |
Parallax (π) | 107.97 ± 0.19 mas [1] |
Distance | 30.21 ± 0.05
ly (9.26 ± 0.02 pc) |
Absolute magnitude (MV) | 4.40 [5] |
Details | |
Mass | 1.21±0.12 [6] M☉ |
Radius | 1.15±0.04 [6] R☉ |
Luminosity | 1.52±0.05 [6] L☉ |
Surface gravity (log g) | 4.3 [2] cgs |
Temperature | 6,112 [2] K |
Metallicity [Fe/H] | –0.80 [2] dex |
Rotational velocity (v sin i) | 1.0±0.6 [6] km/s |
Age | 1.0 [5] or 7.25 [7] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Gamma Pavonis, Latinized from γ Pavonis, is a star in the southern circumpolar constellation of Pavo. With an apparent visual magnitude of 4.22, [2] it is a fourth-magnitude star and thereby visible to the naked eye. From parallax observations with the Hipparcos satellite, the distance to this star has been estimated at 30.21 light-years (9.26 parsecs). [1] It is drifting closer to the Sun with a radial velocity of −30 km/s. [5]
Compared to the Sun, this star has a 21% greater mass and a 15% larger radius. It is a brighter star with 152% of the Sun's luminosity, [6] which is it radiating from the outer envelope at an effective temperature of 6,112 K. [2] The stellar classification of F9 V [3] puts it in the class of F-type main sequence stars that generate energy through the nuclear fusion of hydrogen at the core. It is a metal-poor star, which means it has a low abundance of elements heavier than helium. Age estimates range from a low of a billion [5] years up to 7.25 billion years. [7] Gamma Pavonis is orbiting through the Milky Way at an unusually high peculiar velocity relative to nearby stars.[ citation needed]
This star has rank 14 on TPF-C's top 100 target stars to search for a rocky planet in the Habitable Zone, approximately 1.2 AU, or a little beyond an Earth-like orbit.