3 Corvi
Star in the costellation Corvus / From Wikipedia, the free encyclopedia
3 Corvi is a single[9] star in the southern constellation of Corvus, located 192 light years away from the Sun.[1] It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 5.45.[2] This object is moving further from the Earth with a heliocentric radial velocity of +14 km/s.[5]
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Corvus |
Right ascension | 12h 11m 03.83987s[1] |
Declination | −23° 36′ 08.7221″[1] |
Apparent magnitude (V) | 5.45[2] |
Characteristics | |
Evolutionary stage | main sequence[3] |
Spectral type | A1 V[4] |
B−V color index | 0.055±0.004[2] |
Astrometry | |
Radial velocity (Rv) | +14.41±1.09[5] km/s |
Proper motion (μ) | RA: −66.853[1] mas/yr Dec.: −19.826[1] mas/yr |
Parallax (π) | 17.0039 ± 0.1918 mas[1] |
Distance | 192 ± 2 ly (58.8 ± 0.7 pc) |
Absolute magnitude (MV) | 1.61[2] |
Details[5] | |
Mass | 2.14[6] M☉ |
Radius | 1.87[7] R☉ |
Luminosity | 9.55+1.17 −1.04 L☉ |
Surface gravity (log g) | 4.12±0.22 cgs |
Temperature | 9,671±329[6] K |
Metallicity [Fe/H] | +0.17±0.41 dex |
Rotational velocity (v sin i) | 130 km/s |
Age | 907.37+92.96 −899.21 Myr |
Other designations | |
Database references | |
SIMBAD | data |
This is an A-type main-sequence star[3] with a stellar classification of A1 V.[4] It has 2.14[6] times the mass of the Sun and 1.87[7] times the Sun's radius. The star is around 900 million years old with a high rate of rotation, showing a projected rotational velocity of 130 km/s.[5] It is radiating ten[5] times the luminosity of the Sun from its photosphere at an effective temperature of 9,671 K.[6] An infrared excess has been detected, suggesting that a debris disk with a temperature of 150 K is orbiting 14.7 AU from the host star.[7]