Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Aries |
Right ascension | 02h 54m 55.19994s [1] |
Declination | +17° 44′ 05.1102″ [1] |
Apparent magnitude (V) | 7.01 [2] |
Characteristics | |
Spectral type | A5 V [3] |
U−B color index | +0.03 [4] |
B−V color index | +0.28 [4] |
Astrometry | |
Radial velocity (Rv) | +3.2 ± 3.6 [2] km/s |
Proper motion (μ) |
RA: +46.18
[1]
mas/
yr Dec.: −25.50 [1] mas/ yr |
Parallax (π) | 12.07 ± 0.70 mas [1] |
Distance | 270 ± 20
ly (83 ± 5 pc) |
Absolute magnitude (MV) | +2.43 [5] |
Details | |
Luminosity | 8.85 [5] L☉ |
Other designations | |
Database references | |
SIMBAD | data |
Rho1 Arietis is the Bayer designation for a star in the northern constellation of Aries, the ram. It has an apparent visual magnitude of 7.01, [2] making it a challenge to see with the naked eye even under ideal dark-sky conditions. Based upon an annual parallax shift measurement of 12.07 mas, [1] it is 270 light-years (83 parsecs) distant from the Earth. It is a white-hued A5 main sequence star.
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Aries |
Right ascension | 02h 54m 55.19994s [1] |
Declination | +17° 44′ 05.1102″ [1] |
Apparent magnitude (V) | 7.01 [2] |
Characteristics | |
Spectral type | A5 V [3] |
U−B color index | +0.03 [4] |
B−V color index | +0.28 [4] |
Astrometry | |
Radial velocity (Rv) | +3.2 ± 3.6 [2] km/s |
Proper motion (μ) |
RA: +46.18
[1]
mas/
yr Dec.: −25.50 [1] mas/ yr |
Parallax (π) | 12.07 ± 0.70 mas [1] |
Distance | 270 ± 20
ly (83 ± 5 pc) |
Absolute magnitude (MV) | +2.43 [5] |
Details | |
Luminosity | 8.85 [5] L☉ |
Other designations | |
Database references | |
SIMBAD | data |
Rho1 Arietis is the Bayer designation for a star in the northern constellation of Aries, the ram. It has an apparent visual magnitude of 7.01, [2] making it a challenge to see with the naked eye even under ideal dark-sky conditions. Based upon an annual parallax shift measurement of 12.07 mas, [1] it is 270 light-years (83 parsecs) distant from the Earth. It is a white-hued A5 main sequence star.