Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Cassiopeia |
Right ascension | 02h 38m 02.03097s [1] |
Declination | +72° 49′ 05.7106″ [1] |
Apparent magnitude (V) | 5.17 [2] |
Characteristics | |
Spectral type | G8III [3] |
B−V color index | +0.896±0.003 [2] |
Astrometry | |
Radial velocity (Rv) | −3.69±0.13 [1] km/s |
Proper motion (μ) |
RA: −27.441
[1]
mas/
yr Dec.: +15.627 [1] mas/ yr |
Parallax (π) | 12.1723 ± 0.1139 mas [1] |
Distance | 268 ± 3
ly (82.2 ± 0.8 pc) |
Absolute magnitude (MV) | 0.70 [2] |
Details | |
Mass | 2.55±0.68 [4] M☉ |
Radius | 10.06+0.15 −0.17 [1] R☉ |
Luminosity | 60.7±0.7 [1] L☉ |
Surface gravity (log g) | 2.91±0.11 [4] cgs |
Temperature | 5,080+37 −42 [1] K |
Metallicity [Fe/H] | 0.02±0.05 [4] dex |
Age | 977+198 −164 [4] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 15920 is a single [6] star in the northern constellation of Cassiopeia. It has a yellow hue and is visible to the naked eye as a dim point of light with an apparent visual magnitude of 5.17. [2] This object is located at a distance of approximately 268 light years from the Sun based on parallax, but it is drifting closer with a radial velocity of −4 km/s. [1]
This object is an aging giant star with a stellar classification of G8III. [3] After exhausting the supply of hydrogen at its core, this star has cooled and expanded off the main sequence – at present it has ten times the girth of the Sun. [1] The star is around a billion years old [4] with 2.6 [4] times the mass of the Sun. It is radiating 61 times the Sun's luminosity from its swollen photosphere at an effective temperature of 5,080 K. [1] HD 15920 is the most likely source for the X-ray emission detected at these coordinates. [7]
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Cassiopeia |
Right ascension | 02h 38m 02.03097s [1] |
Declination | +72° 49′ 05.7106″ [1] |
Apparent magnitude (V) | 5.17 [2] |
Characteristics | |
Spectral type | G8III [3] |
B−V color index | +0.896±0.003 [2] |
Astrometry | |
Radial velocity (Rv) | −3.69±0.13 [1] km/s |
Proper motion (μ) |
RA: −27.441
[1]
mas/
yr Dec.: +15.627 [1] mas/ yr |
Parallax (π) | 12.1723 ± 0.1139 mas [1] |
Distance | 268 ± 3
ly (82.2 ± 0.8 pc) |
Absolute magnitude (MV) | 0.70 [2] |
Details | |
Mass | 2.55±0.68 [4] M☉ |
Radius | 10.06+0.15 −0.17 [1] R☉ |
Luminosity | 60.7±0.7 [1] L☉ |
Surface gravity (log g) | 2.91±0.11 [4] cgs |
Temperature | 5,080+37 −42 [1] K |
Metallicity [Fe/H] | 0.02±0.05 [4] dex |
Age | 977+198 −164 [4] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 15920 is a single [6] star in the northern constellation of Cassiopeia. It has a yellow hue and is visible to the naked eye as a dim point of light with an apparent visual magnitude of 5.17. [2] This object is located at a distance of approximately 268 light years from the Sun based on parallax, but it is drifting closer with a radial velocity of −4 km/s. [1]
This object is an aging giant star with a stellar classification of G8III. [3] After exhausting the supply of hydrogen at its core, this star has cooled and expanded off the main sequence – at present it has ten times the girth of the Sun. [1] The star is around a billion years old [4] with 2.6 [4] times the mass of the Sun. It is radiating 61 times the Sun's luminosity from its swollen photosphere at an effective temperature of 5,080 K. [1] HD 15920 is the most likely source for the X-ray emission detected at these coordinates. [7]