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