Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Mensa |
Right ascension | 03h 29m 58.8930s [1] |
Declination | −78° 21′ 06.6634″ [1] |
Apparent magnitude (V) | 5.67 ± 0.01 [2] |
Characteristics | |
Evolutionary stage | Horizontal branch [3] |
Spectral type | G8 III [4] |
U−B color index | +0.65 [5] |
B−V color index | +0.93 [5] |
Astrometry | |
Radial velocity (Rv) | 18.4 ± 0.1 [6] km/s |
Proper motion (μ) |
RA: −11.565
[1]
mas/
yr Dec.: −26.933 [1] mas/ yr |
Parallax (π) | 9.8072 ± 0.0355 mas [1] |
Distance | 333 ± 1
ly (102.0 ± 0.4 pc) |
Absolute magnitude (MV) | +0.72 [7] |
Details | |
Mass | 2.36 [8] M☉ |
Radius | 9.33 [9] R☉ |
Luminosity | 58.06 [10] L☉ |
Surface gravity (log g) | 3.01 ± 0.09 [11] cgs |
Temperature | 5,109 ± 32 [11] K |
Metallicity [Fe/H] | +0.06 ± 0.03 [11] dex |
Rotational velocity (v sin i) | 3.4 ± 1 [12] km/s |
Age | 750 [8] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 22676 (HR 1109) is a solitary [13] star in the southern circumpolar constellation Mensa. It has an apparent magnitude of 5.67, making it faintly visible to the naked eye and is currently located at a distance of 333 light years. However, it is recceding from the sun with a radial velocity of 18.4 km/s.
HD 22676 has a stellar classification of G8 III, [4] which indicates that is an evolved late G-type giant star currently on the horizontal branch, specifically the red clump region. [3] At an age of 700 million years, [8] it has expanded to 9.33 times the radius of the Sun. It has 2.36 [8] times the Sun's mass and radiates at approximately 58 [10] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 5,109 [11] K, which gives it a yellow glow. HD 22676 is slightly metal enriched with an iron abundance 115% [11] that of the Sun and spins lesuirely with a projected rotational velocity of 3.6 km/s. [12]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Mensa |
Right ascension | 03h 29m 58.8930s [1] |
Declination | −78° 21′ 06.6634″ [1] |
Apparent magnitude (V) | 5.67 ± 0.01 [2] |
Characteristics | |
Evolutionary stage | Horizontal branch [3] |
Spectral type | G8 III [4] |
U−B color index | +0.65 [5] |
B−V color index | +0.93 [5] |
Astrometry | |
Radial velocity (Rv) | 18.4 ± 0.1 [6] km/s |
Proper motion (μ) |
RA: −11.565
[1]
mas/
yr Dec.: −26.933 [1] mas/ yr |
Parallax (π) | 9.8072 ± 0.0355 mas [1] |
Distance | 333 ± 1
ly (102.0 ± 0.4 pc) |
Absolute magnitude (MV) | +0.72 [7] |
Details | |
Mass | 2.36 [8] M☉ |
Radius | 9.33 [9] R☉ |
Luminosity | 58.06 [10] L☉ |
Surface gravity (log g) | 3.01 ± 0.09 [11] cgs |
Temperature | 5,109 ± 32 [11] K |
Metallicity [Fe/H] | +0.06 ± 0.03 [11] dex |
Rotational velocity (v sin i) | 3.4 ± 1 [12] km/s |
Age | 750 [8] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 22676 (HR 1109) is a solitary [13] star in the southern circumpolar constellation Mensa. It has an apparent magnitude of 5.67, making it faintly visible to the naked eye and is currently located at a distance of 333 light years. However, it is recceding from the sun with a radial velocity of 18.4 km/s.
HD 22676 has a stellar classification of G8 III, [4] which indicates that is an evolved late G-type giant star currently on the horizontal branch, specifically the red clump region. [3] At an age of 700 million years, [8] it has expanded to 9.33 times the radius of the Sun. It has 2.36 [8] times the Sun's mass and radiates at approximately 58 [10] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 5,109 [11] K, which gives it a yellow glow. HD 22676 is slightly metal enriched with an iron abundance 115% [11] that of the Sun and spins lesuirely with a projected rotational velocity of 3.6 km/s. [12]