Observation data EpochJ2000.0 EquinoxJ2000.0 (ICRS) | |
---|---|
Constellation | Auriga |
Right ascension | 06h 47m 39.57703s[1] |
Declination | +48° 47′ 22.1222″[1] |
Apparent magnitude (V) | +5.22[2] |
Characteristics | |
Spectral type | K0.5 III[1] |
U−Bcolor index | +1.04[2] |
B−Vcolor index | +1.11[2] |
Astrometry | |
Radial velocity (Rv) | −6.51±0.30[3] km/s |
Proper motion (μ) | RA: −4.32[1]mas/yr Dec.: +7.19[1]mas/yr |
Parallax (π) | 9.05±0.38 mas[1] |
Distance | 360 ± 20 ly (110 ± 5 pc) |
Absolute magnitude (MV) | +0.01[4] |
Orbit[5] | |
Period (P) | 5,996±26 d |
Eccentricity (e) | 0.044±0.014 |
Periastronepoch (T) | 52556 ± 310 MJD |
Argument of periastron (ω) (secondary) | 222±19° |
Semi-amplitude (K1) (primary) | 3.24±0.04 km/s |
Details[6] | |
ψ6 Aur A | |
Mass | 2.02±0.28 M☉ |
Radius | 17.72±0.76 R☉ |
Luminosity | 123.4±10.2 L☉ |
Surface gravity (log g) | 2.25±0.07 cgs |
Temperature | 4,574±26 K |
Metallicity [Fe/H] | −0.08±0.10 dex |
Rotational velocity (v sin i) | +10[7] km/s |
Age | 1.55±0.67 Gyr |
Other designations | |
ψ6 Aur,57 Aurigae,BD+48° 1436,FK5 1176,HD 48781,HIP 32562,HR 2487,SAO 41346[8] | |
Database references | |
SIMBAD | data |
Psi6 Aurigae,Latinized from ψ6 Aurigae, is aspectroscopic binary[5]star in the northernconstellation ofAuriga. It is a dim, naked eye star with anapparent visual magnitude of +5.22.[2] Based upon a measured annualparallax shift of9.05 ± 0.38mas,[1] it is approximately 360light-years (110parsecs) distant from the Earth.
This is a single-linedspectroscopic binary star system with anorbital period of 5,996 days (16.4 years) and aneccentricity of 0.044.[5] The visible component is aK-typegiant star with astellar classification of K0.5 III.[1] It is most likely (78% chance) on thered giant branch and is around 1.55 billion years old. As such, it has an estimated double themass of the Sun and about 18 times theSun's radius. The star is radiating about 123 times theSun's luminosity from itsphotosphere at aneffective temperature of 4,574 K.[6]