  | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Camelopardalis [1] |
| Right ascension | 06h 40m 28.87701s [2] |
| Declination | +77° 59′ 44.8179″ [2] |
| Apparent magnitude (V) | 5.72±0.01 [3] |
| Characteristics | |
| Spectral type | K5 III [4] |
| B−V color index | +1.47 [5] |
| Astrometry | |
| Radial velocity (Rv) | −16.6±0.2 [6] km/s |
| Proper motion (μ) | RA: +13.997 mas/yr [2] Dec.: −5.701 mas/yr [2] |
| Parallax (π) | 4.4952±0.0455 mas [2] |
| Distance | 726 ± 7 ly (222 ± 2 pc) |
| Absolute magnitude (MV) | −0.89 [1] |
| Details | |
| Mass | 2.34±0.69 [7] M☉ |
| Radius | 49.6±2.6 [8] R☉ |
| Luminosity | 468±8 [2] L☉ |
| Surface gravity (log g) | 1.62±0.11 [7] cgs |
| Temperature | 4,207±140 [9] K |
| Metallicity [Fe/H] | −0.11±0.01 [10] dex |
| Age | 1.15+0.51 −0.35 [7] Gyr |
| Other designations | |
| AG+78°144, BD+78°227, FK5 2507, GC 8574, HD 45866, HIP 31940, HR 2363, SAO 5919 [11] | |
| Database references | |
| SIMBAD | data |
HD 45866, also known as HR 2363 is a solitary star [12] located in the northern circumpolar constellation Camelopardalis. It is faintly visible to the naked eye as an orange-hued star with an apparent magnitude of 5.72. [3] Gaia DR3 parallax measurements place it 726 light years away and it is currently approaching the Solar System with a heliocentric radial velocity of −16.6 km/s . [6] At its current distance, HD 45866's brightness is diminished by 0.26 magnitudes due to interstellar dust. [13] It has an absolute magnitude of −0.89 [1]
This is an evolved red giant with a stellar classification of K5 III. [4] It has 2.34 times the mass of the Sun [7] but it has expanded to nearly 50 times the radius of the Sun [8] at an age of 1.15 billion years. [7] It radiates 468 times the luminosity of the Sun [2] from its photosphere at an effective temperature of 4,207 K . [9] It has an iron abundance 78% of the Sun's, [10] making it slightly metal deficient.
