17 Canis Majoris is a single[6] star in the southern constellation of Canis Major, located 610 light years away from the Sun.[1] It is visible to the naked eye as a dim, white-hued star with an apparent visual magnitude of 5.80.[2] The object is moving closer to the Earth with a heliocentric radial velocity of −13 km/s.[2]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Canis Major |
Right ascension | 06h 55m 02.73805s[1] |
Declination | −20° 24′ 17.5527″[1] |
Apparent magnitude (V) | 5.80[2] |
Characteristics | |
Evolutionary stage | Main sequence[3] |
Spectral type | A2 V[4] |
B−V color index | 0.048±0.003[2] |
Astrometry | |
Radial velocity (Rv) | −12.9±0.5[2] km/s |
Proper motion (μ) | RA: −0.284 mas/yr Dec.: +10.574 mas/yr |
Parallax (π) | 5.3270 ± 0.0978 mas |
Distance | 610 ± 10 ly (188 ± 3 pc) |
Absolute magnitude (MV) | −0.14[2] |
Details | |
Mass | 2.84±0.05[3] M☉ |
Luminosity | 126+18 −15[3] L☉ |
Temperature | 8,872+164 −162[3] K |
Rotational velocity (v sin i) | 43[3] km/s |
Other designations | |
Database references | |
SIMBAD | data |
This is an A-type main-sequence star with a stellar classification of A2 V,[4] and is near the end of its main sequence lifetime. It has 2.8 times the mass of the Sun and is spinning with a projected rotational velocity of 43 km/s.[3] The star is radiating 126 times the luminosity of the Sun from its photosphere at an effective temperature of 8,872 K.[3] It has a magnitude 8.66 visual companion at an angular separation of 42.90″ along a position angle of 147°, as of 2015.[7]