Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Aries |
Right ascension | 03h 02m 26.02628s[1] |
Declination | +26° 36′ 33.2602″[1] |
Apparent magnitude (V) | 6.623 ± 0.005[2] |
Characteristics | |
Spectral type | G8 V[3] |
B−V color index | 0.715[4] |
Astrometry | |
Radial velocity (Rv) | +9.5±0.1[5] km/s |
Proper motion (μ) | RA: +233.122[1] mas/yr Dec.: –168.438[1] mas/yr |
Parallax (π) | 47.1551 ± 0.0603 mas[1] |
Distance | 69.17 ± 0.09 ly (21.21 ± 0.03 pc) |
Absolute bolometric magnitude (Mbol) | 4.85±0.07[2] |
Details | |
Mass | 1.04[2] M☉ |
Radius | 0.99[2] R☉ |
Luminosity | 0.92[6] L☉ |
Surface gravity (log g) | 4.46[6] cgs |
Temperature | 5,666[6] K |
Metallicity [Fe/H] | 0.15[6] dex |
Rotational velocity (v sin i) | 4.08[4] km/s |
Age | 1.40[5] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
ARICNS | data |
51 Arietis is a star in the northern constellation of Aries. 51 Arietis is the Flamsteed designation. It is a dim, yellow-hued star – a challenge to view with the naked eye, having an apparent visual magnitude of 6.6.[2] Based upon parallax measurements, the star is located at an estimated distance of 67.3 light-years (20.6 parsecs) from the Sun.[8] It is receding from the Earth with a heliocentric radial velocity of +9.5 km/s,[5] and is a member of the IC 2391 moving group.[3]
This is an ordinary G-type main sequence star with a stellar classification of G8 V.[3] Similar to the Sun, it has 1.04 times the mass and 0.99 times the Sun's radius.[2] It is 1.4[5] billion years old with a leisurely rotation rate, showing a projected rotational velocity of 4 km/s.[4] The atmospheric metallicity is higher than solar.[6] The star radiates 92%[6] of the Sun's luminosity from its photosphere at an effective temperature of 5,666 K.[6] This heat gives it the golden-hued glow of a G-type star.[9]
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