HD 45364
Star in the constellation Canis Major / From Wikipedia, the free encyclopedia
HD 45364 is a star in the southern constellation of Canis Major. It is too faint to be visible to the naked eye, having an apparent visual magnitude of 8.08.[2] The distance to this system is 112 light years based on parallax.[1] It is drifting further away from the Sun with a radial velocity of +16.4 km/s,[1] having come within 49 light-years some 1.5 million years ago.[2]
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Canis Major |
Right ascension | 06h 25m 38.47443s[1] |
Declination | −31° 28′ 51.4285″[1] |
Apparent magnitude (V) | 8.08[2] |
Characteristics | |
Spectral type | G8V[3] |
B−V color index | 0.719±0.015[2] |
V−R color index | 0.01 |
Astrometry | |
Radial velocity (Rv) | +16.392±0.0004[1] km/s |
Proper motion (μ) | RA: +52.182[1] mas/yr Dec.: −11.926[1] mas/yr |
Parallax (π) | 29.0797 ± 0.0316 mas[1] |
Distance | 112.2 ± 0.1 ly (34.39 ± 0.04 pc) |
Absolute magnitude (MV) | +5.51[2] |
Details[4] | |
Mass | 0.88±0.02 M☉ |
Radius | 0.82±0.01 R☉ |
Luminosity | 0.562±0.004 L☉ |
Surface gravity (log g) | 4.55±0.03 cgs |
Temperature | 5,540±31 K |
Metallicity [Fe/H] | −0.14±0.03[2] dex |
Rotational velocity (v sin i) | 1.672±0.665[5] km/s |
Age | 3.4±2.7 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Exoplanet Archive | data |
This object is an ordinary G-type main-sequence star with a stellar classification of G8V,[3] which indicates it is generating energy through core hydrogen fusion. It is around 3.4 billion years old and is spinning with a projected rotational velocity of 1.7 km/s.[5] The star has 88% of the mass of the Sun and 82% of the Sun's radius. It is radiating 56% of the luminosity of the Sun from its photosphere at an effective temperature of 5,540 K. As of August 2008 there are two confirmed extrasolar planets (or exoplanets) orbiting around it.[7]