| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 00h 53m 04.19644s[1] |
| Declination | +61° 07′ 26.2993″[1] |
| Apparent magnitude (V) | 4.80[2] |
| Characteristics | |
| Evolutionary stage | subgiant[1] |
| Spectral type | F9V[3] |
| B−Vcolor index | 0.540±0.008[4] |
| Astrometry | |
| Radial velocity (Rv) | +20.68±0.12[1] km/s |
| Proper motion (μ) | RA: –68.298[1]mas/yr Dec.: +169.435[1]mas/yr |
| Parallax (π) | 52.9017±0.1037 mas[1] |
| Distance | 61.7 ± 0.1 ly (18.90 ± 0.04 pc) |
| Absolute magnitude (MV) | 3.44[4] |
| Details | |
| Mass | 1.194[5] M☉ |
| Radius | 1.77[1] R☉ |
| Luminosity | 3.7[1] L☉ |
| Surface gravity (log g) | 0.53[2] cgs |
| Temperature | 5,986[1] K |
| Metallicity [Fe/H] | 0.04[5] dex |
| Rotational velocity (v sin i) | 8.1[2] km/s |
| Age | 5.3[5] Gyr |
| Other designations | |
| BD+60°124,GJ 41,HD 5015,HIP 4151,HR 244,SAO 11444,WDS J00531+6107A[6] | |
| Database references | |
| SIMBAD | data |
HR 244 is a single[7]star in theconstellationCassiopeia. It has a yellow-white hue and is visible to the naked eye with anapparent visual magnitude of 4.80.[2] Based uponparallax measurements, it is located at a distance of62 light years from the Sun, and is drifting further away with aradial velocity of+20.7 km/s;[1] around546,000 years ago it passed within 38 light-years of the Sun.[4] The star has a relatively highproper motion, traversing thecelestial sphere at the rate of0.183 arcseconds per annum.[8]
This object is anF-type star with astellar classification of F9V.[3] Despite the spectral class,evolutionary models show it to have left themain sequence and is now asubgiant.[1] It is 5.3[5] billion years old and is spinning with aprojected rotational velocity of8 km/s.[2] The star has 1.2[5] times themass of the Sun and 1.8[1] times theSun's radius. It is radiating 3.7 times theluminosity of the Sun from itsphotosphere at aneffective temperature of5,986 K.[1]
