Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Hydra |
Right ascension | 09h 38m 27.28962s [1] |
Declination | +04° 38′ 57.4461″ [1] |
Apparent magnitude (V) | 4.68 [2] |
Characteristics | |
Evolutionary stage | giant |
Spectral type | K3 III [2] |
B−V color index | +1.310±0.033 [3] |
Astrometry | |
Radial velocity (Rv) | +44.61±0.23 [4] km/s |
Proper motion (μ) |
RA: −163.18
[1]
mas/
yr Dec.: −50.88 [1] mas/ yr |
Parallax (π) | 11.04 ± 0.27 mas [1] |
Distance | 295 ± 7
ly (91 ± 2 pc) |
Absolute magnitude (MV) | −0.10 [3] |
Details | |
Mass | 1.32 [2] M☉ |
Radius | 24 [4] R☉ |
Luminosity | 190.5 [2] L☉ |
Surface gravity (log g) | 2.09±0.22 [5] cgs |
Temperature | 4,188±33 [2] K |
Metallicity [Fe/H] | −0.30±0.09 [5] dex |
Rotational velocity (v sin i) | 3.0 [4] km/s |
Age | 4.58 [2] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
2 Sextantis is a single [7] star that is now in the equatorial constellation Hydra, located around 295 light years away from the Sun. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.68. [2] This object is moving further from the Earth with a heliocentric radial velocity of +44.6 km/s. [4] It has a relatively high proper motion, traversing the celestial sphere at the rate of 0.173 ″ per year. [8]
This is a giant star with a stellar classification of K3 III, [2] which, at the age of 4.58 [2] billion years old, has exhausted the hydrogen at its core and evolved away from the main sequence. The star has 1.32 [2] times the mass of the Sun and has expanded to 24 [4] times the Sun's radius. It is radiating 190.5 [2] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,188 K. [2]
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Hydra |
Right ascension | 09h 38m 27.28962s [1] |
Declination | +04° 38′ 57.4461″ [1] |
Apparent magnitude (V) | 4.68 [2] |
Characteristics | |
Evolutionary stage | giant |
Spectral type | K3 III [2] |
B−V color index | +1.310±0.033 [3] |
Astrometry | |
Radial velocity (Rv) | +44.61±0.23 [4] km/s |
Proper motion (μ) |
RA: −163.18
[1]
mas/
yr Dec.: −50.88 [1] mas/ yr |
Parallax (π) | 11.04 ± 0.27 mas [1] |
Distance | 295 ± 7
ly (91 ± 2 pc) |
Absolute magnitude (MV) | −0.10 [3] |
Details | |
Mass | 1.32 [2] M☉ |
Radius | 24 [4] R☉ |
Luminosity | 190.5 [2] L☉ |
Surface gravity (log g) | 2.09±0.22 [5] cgs |
Temperature | 4,188±33 [2] K |
Metallicity [Fe/H] | −0.30±0.09 [5] dex |
Rotational velocity (v sin i) | 3.0 [4] km/s |
Age | 4.58 [2] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
2 Sextantis is a single [7] star that is now in the equatorial constellation Hydra, located around 295 light years away from the Sun. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.68. [2] This object is moving further from the Earth with a heliocentric radial velocity of +44.6 km/s. [4] It has a relatively high proper motion, traversing the celestial sphere at the rate of 0.173 ″ per year. [8]
This is a giant star with a stellar classification of K3 III, [2] which, at the age of 4.58 [2] billion years old, has exhausted the hydrogen at its core and evolved away from the main sequence. The star has 1.32 [2] times the mass of the Sun and has expanded to 24 [4] times the Sun's radius. It is radiating 190.5 [2] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,188 K. [2]