  | |
| 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 | |
| Kamelos, 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 designated HR 2363 and named Kamelos, [12] is a solitary star [13] 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. [14] 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.
The IAU Working Group on Star Names approved the name Kamelos for this star on 25 December 2025, and it is now so entered in the IAU Catalog of Star Names. [12] Kamelos is Greek for camel, a pun on the constellation Camelopardalis (literally "spotted camel", representing a giraffe), applied to an arbitrary star in the constellation. Based on the same association, Jacob Bartsch in 1624 had used Camelus Rebeccae as another name for Camelopardalis, referring to the camel of the biblical figure Rebecca. [15] [12]
