Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Auriga |
Right ascension | 05h 54m 50.76694s [1] |
Declination | +55° 42′ 25.0802″ [1] |
Apparent magnitude (V) | +5.00 [2] |
Characteristics | |
Spectral type | A2 Va [3] |
U−B color index | +0.12 [2] |
B−V color index | +0.05 [2] |
Astrometry | |
Radial velocity (Rv) | −13.3±2.4 [4] km/s |
Proper motion (μ) |
RA: −7.049
[1]
mas/
yr Dec.: +12.959 [1] mas/ yr |
Parallax (π) | 13.3702 ± 0.1670 mas [1] |
Distance | 244 ± 3
ly (74.8 ± 0.9 pc) |
Absolute magnitude (MV) | +0.64 [5] |
Details [6] | |
Mass | 1.96 M☉ |
Radius | 1.1 [7] R☉ |
Luminosity | 49.5 [5] L☉ |
Surface gravity (log g) | 3.88 cgs |
Temperature | 9,152±311 K |
Metallicity [Fe/H] | −0.36±0.04 [5] dex |
Rotational velocity (v sin i) | 62 km/s |
Age | 174 Myr |
Other designations | |
Database references | |
SIMBAD | data |
Xi Aurigae, Latinized from ξ Aurigae, is the Bayer designation for a single, [9] white-hued star in the northern constellation of Auriga. This star was once considered part of the constellation of Camelopardalis and held the Flamsteed designation 32 Camelopardalis. [10] It is visible to the naked eye with an apparent visual magnitude of +5.0. [2] The measured annual parallax shift of this star is 13.37 ± 0.17 mas, [1] which corresponds to a physical distance of 244 light-years (75 parsecs) with a 3 light-year margin of error. At that distance, the visual magnitude of the star is diminished by an extinction of 0.108 due to interstellar dust. [11]
This is an A-type main sequence star with a stellar classification of A2 Va. [3] Although it was one of the first stars to be cataloged as a Lambda Boötis star, Murphy et al. (2015) don't consider it to be a member of this population. [3] The star has nearly twice [6] the mass of the Sun and about 1.1 [7] times the Sun's radius. It is an estimated 174 [6] million years old and is spinning with a projected rotational velocity of 62 km/s. [6] Xi Aurigae is radiating 49.5 [5] times the Sun's luminosity from its photosphere at an effective temperature of around 9,152 K. [6]
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Auriga |
Right ascension | 05h 54m 50.76694s [1] |
Declination | +55° 42′ 25.0802″ [1] |
Apparent magnitude (V) | +5.00 [2] |
Characteristics | |
Spectral type | A2 Va [3] |
U−B color index | +0.12 [2] |
B−V color index | +0.05 [2] |
Astrometry | |
Radial velocity (Rv) | −13.3±2.4 [4] km/s |
Proper motion (μ) |
RA: −7.049
[1]
mas/
yr Dec.: +12.959 [1] mas/ yr |
Parallax (π) | 13.3702 ± 0.1670 mas [1] |
Distance | 244 ± 3
ly (74.8 ± 0.9 pc) |
Absolute magnitude (MV) | +0.64 [5] |
Details [6] | |
Mass | 1.96 M☉ |
Radius | 1.1 [7] R☉ |
Luminosity | 49.5 [5] L☉ |
Surface gravity (log g) | 3.88 cgs |
Temperature | 9,152±311 K |
Metallicity [Fe/H] | −0.36±0.04 [5] dex |
Rotational velocity (v sin i) | 62 km/s |
Age | 174 Myr |
Other designations | |
Database references | |
SIMBAD | data |
Xi Aurigae, Latinized from ξ Aurigae, is the Bayer designation for a single, [9] white-hued star in the northern constellation of Auriga. This star was once considered part of the constellation of Camelopardalis and held the Flamsteed designation 32 Camelopardalis. [10] It is visible to the naked eye with an apparent visual magnitude of +5.0. [2] The measured annual parallax shift of this star is 13.37 ± 0.17 mas, [1] which corresponds to a physical distance of 244 light-years (75 parsecs) with a 3 light-year margin of error. At that distance, the visual magnitude of the star is diminished by an extinction of 0.108 due to interstellar dust. [11]
This is an A-type main sequence star with a stellar classification of A2 Va. [3] Although it was one of the first stars to be cataloged as a Lambda Boötis star, Murphy et al. (2015) don't consider it to be a member of this population. [3] The star has nearly twice [6] the mass of the Sun and about 1.1 [7] times the Sun's radius. It is an estimated 174 [6] million years old and is spinning with a projected rotational velocity of 62 km/s. [6] Xi Aurigae is radiating 49.5 [5] times the Sun's luminosity from its photosphere at an effective temperature of around 9,152 K. [6]