HD 64307
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| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Camelopardalis[1] |
| Right ascension | 08h 00m 11.7385s[2] |
| Declination | +73° 55′ 04.5036″[2] |
| Apparent magnitude (V) | 5.35±0.01[3] |
| Characteristics | |
| Evolutionary stage | red giant branch[4] |
| Spectral type | K3 III[5] |
| U−B color index | +1.64[6] |
| B−V color index | +1.43[6] |
| Astrometry | |
| Radial velocity (Rv) | 33.54±0.19[7] km/s |
| Proper motion (μ) | RA: −8.194 mas/yr[2] Dec.: −37.514 mas/yr[2] |
| Parallax (π) | 4.7407±0.0741 mas[2] |
| Distance | 690 ± 10 ly (211 ± 3 pc) |
| Absolute magnitude (MV) | −1.77[1] |
| Details | |
| Mass | 1.19[8] M☉ |
| Radius | 49.9[9] R☉ |
| Luminosity (bolometric) | 892[10] L☉ |
| Surface gravity (log g) | 1.18[8] cgs |
| Temperature | 4,264±122[11] K |
| Metallicity [Fe/H] | −0.1[12] dex |
| Rotational velocity (v sin i) | <2[13] km/s |
| Other designations | |
| AG+74°195, BD+74°338, FK5 300, GC 10745, HD 64307, HIP 39117, HR 3075, SAO 6378 | |
| Database references | |
| SIMBAD | data |
HD 64307, also known as HR 3075, is a solitary,[14] orange hued star located in the northern circumpolar constellation Camelopardalis. It has an apparent magnitude of 5.35,[3] allowing it to be faintly seen with the naked eye. Based on parallax measurements from the Gaia spacecraft, The object is estimated to be 690 light years[2] distant. It appears to be receding from the Sun, having a heliocentric radial velocity of 34 km/s.[7]
HD 64307 is an evolved star with a stellar classification of K3 III.[5] Gaia DR3 stellar evolution models place it on the red giant branch.[4] It has a mass comparable to the Sun[8] but due to its evolved state, it has an enlarged radius of 49.9 R☉. It shines with a bolometric luminosity of 892 L☉ from its photosphere at an effective temperature of 4,264 K.[11] HD 64307 has an iron abundance 80% that of the Sun, and is also lithium enriched.[12] Like most giant stars, the object spins slowly, having a projected rotational velocity lower than 2 km/s.[13]
