| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Aries[1] |
| Right ascension | 03h 17m 40.04683s[2] |
| Declination | +31° 07′ 37.3604″[2] |
| Apparent magnitude (V) | 6.40[3] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | F8V[3] |
| B−Vcolor index | 0.574[3] |
| Astrometry | |
| Radial velocity (Rv) | 6.47±0.15[2] km/s |
| Proper motion (μ) | RA: −101.950±0.031mas/yr[2] Dec.: −58.033±0.028mas/yr[2] |
| Parallax (π) | 38.3758±0.0318 mas[2] |
| Distance | 84.99 ± 0.07 ly (26.06 ± 0.02 pc) |
| Absolute magnitude (MV) | 4.27[1] |
| Details | |
| Mass | 1.13±0.10[4] M☉ |
| Radius | 1.12+0.03 −0.01[5] R☉ |
| Luminosity | 1.576±0.004[5] L☉ |
| Surface gravity (log g) | 4.53±0.22[4] cgs |
| Temperature | 6,100+36 −60[5] K |
| Metallicity[Fe/H] | 0.17±0.10[4] dex |
| Rotational velocity (v sin i) | 5.5[6] km/s |
| Age | 2.98[6] Gyr |
| Other designations | |
| BD+30°520,GC 3929,HD 20367,HIP 15323,SAO 56323[7] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HD 20367 is astar in theconstellation ofAries, close to the border with thePerseus constellation. It is a yellow-white hued star that is a challenge to view with the naked eye, having anapparent visual magnitude of 6.40.[3] Based uponparallax measurements, it is located 85 light years from theSun. It is drifting further away with aradial velocity of +6.5 km/s.[2] Based upon its movement through space, it is a candidate member of theUrsa Major Moving Group of co-moving stars that probably share a common origin.[8]
This object is alateF-type main-sequence star with astellar classification of F8V.[3] It is about three[6] billion years old and is spinning with aprojected rotational velocity of 5.5 km/s.[6] The star is 12%[5] larger and 13%[4] more massive than the Sun. It is radiating 1.58[5] times theluminosity of the Sun from itsphotosphere at aneffective temperature of 6,100 K.[5]
In June 2002, an announcement was made that aJupiter-mass or largerextrasolar planet had been found orbiting the star,[9] with aperiod of 1.285 years and aneccentricity of 0.32. The eccentric nature of this planet's orbit meant that it spends part of each circuit around the star outside thehabitable zone.[10] However, subsequent observations in 2009 put the existence of this planet in doubt.[11]
| Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b(unconfirmed) | >1.17MJ | 1.246±0.075 | 469.5±9.3 | 0.320±0.090 | — | — |
