Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Aries |
Right ascension | 02h 24m 49.05655s [1] |
Declination | +10° 36′ 38.0236″ [1] |
Apparent magnitude (V) | +5.46 [2] |
Characteristics | |
Spectral type | B7 IV [3] |
U−B color index | −0.48 [2] |
B−V color index | −0.10 [2] |
Astrometry | |
Proper motion (μ) |
RA: +20.09
[1]
mas/
yr Dec.: −14.79 [1] mas/ yr |
Parallax (π) | 3.74 ± 0.29 mas [1] |
Distance | 870 ± 70
ly (270 ± 20 pc) |
Absolute magnitude (MV) | −0.43 [4] |
Details | |
Mass | 3.9 [5] M☉ |
Surface gravity (log g) | 3.897±0.017 [5] cgs |
Temperature | 13627±100 [5] K |
Rotational velocity (v sin i) | 164±8 [5] km/s |
Age | 195 [4] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Xi Arietis, Latinized from ξ Arietis, is the Bayer designation for a binary star [7] system in the northern constellation of Aries. It has an apparent visual magnitude of 5.46, [2] and so is dimly visible to the naked eye. Based upon an annual parallax shift of 3.74±0.29 mas as seen from Earth, it is 872 ± 68 light-years (267 ± 21 parsecs) distant from the Sun. At that distance, the visual magnitude of the star is diminished by an extinction factor of 0.24 due to interstellar dust. [4]
This is a double-lined spectroscopic binary. [7] The spectrum matches a stellar classification of B7 IV, [3] which would indicate a subgiant star that has exhausted the supply of hydrogen at its core and is in the process of evolving into a giant star. Xi Arietis was once a designation for Psi Ceti (ψ Cet, ψ Ceti). [8]
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Aries |
Right ascension | 02h 24m 49.05655s [1] |
Declination | +10° 36′ 38.0236″ [1] |
Apparent magnitude (V) | +5.46 [2] |
Characteristics | |
Spectral type | B7 IV [3] |
U−B color index | −0.48 [2] |
B−V color index | −0.10 [2] |
Astrometry | |
Proper motion (μ) |
RA: +20.09
[1]
mas/
yr Dec.: −14.79 [1] mas/ yr |
Parallax (π) | 3.74 ± 0.29 mas [1] |
Distance | 870 ± 70
ly (270 ± 20 pc) |
Absolute magnitude (MV) | −0.43 [4] |
Details | |
Mass | 3.9 [5] M☉ |
Surface gravity (log g) | 3.897±0.017 [5] cgs |
Temperature | 13627±100 [5] K |
Rotational velocity (v sin i) | 164±8 [5] km/s |
Age | 195 [4] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Xi Arietis, Latinized from ξ Arietis, is the Bayer designation for a binary star [7] system in the northern constellation of Aries. It has an apparent visual magnitude of 5.46, [2] and so is dimly visible to the naked eye. Based upon an annual parallax shift of 3.74±0.29 mas as seen from Earth, it is 872 ± 68 light-years (267 ± 21 parsecs) distant from the Sun. At that distance, the visual magnitude of the star is diminished by an extinction factor of 0.24 due to interstellar dust. [4]
This is a double-lined spectroscopic binary. [7] The spectrum matches a stellar classification of B7 IV, [3] which would indicate a subgiant star that has exhausted the supply of hydrogen at its core and is in the process of evolving into a giant star. Xi Arietis was once a designation for Psi Ceti (ψ Cet, ψ Ceti). [8]