11 Canis Minoris is a single[8] star in the equatorial constellation of Canis Minor,[7] located around 313 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 5.25.[2] This object is moving away from the Earth with a heliocentric radial velocity of +28 km/s,[4] having come to within 157 light-years some 2.35 million years ago.[2]
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Canis Minor |
Right ascension | 07h 46m 16.20081s[1] |
Declination | +10° 46′ 05.7055″[1] |
Apparent magnitude (V) | 5.25[2] |
Characteristics | |
Spectral type | A1Vnn[3] |
B−V color index | 0.018±0.008[2] |
Astrometry | |
Radial velocity (Rv) | +28.0±4.2[4] km/s |
Proper motion (μ) | RA: −29.902[1] mas/yr Dec.: −25.275[1] mas/yr |
Parallax (π) | 10.4262 ± 0.2007 mas[1] |
Distance | 313 ± 6 ly (96 ± 2 pc) |
Absolute magnitude (MV) | 0.42[2] |
Details | |
Mass | 2.23[5] M☉ |
Radius | 2.5[6] R☉ |
Luminosity | 65.26[2] L☉ |
Surface gravity (log g) | 3.60[5] cgs |
Temperature | 9,972±339[5] K |
Age | 149[5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
This is an A-type main-sequence star with a stellar classification of A1Vnn,[3] where the 'n' notation indicates (very) "nebulous" lines due to rapid rotation. However, Gray and Garrison (1987) found a class of A0.5 IVnn,[9] which would instead match an evolving subgiant star. It is a suspected variable star of unknown type.[10] This object is 149[5] million years old with 2.23[5] times the mass of the Sun and about 2.5[6] times the Sun's radius. It is radiating 65[2] times the Sun's luminosity from its photosphere at an effective temperature of 9,972 K.[5]