43 Camelopardalis
Star in the constellation Camelopardalis
From Wikipedia, the free encyclopedia
43 Camelopardalis is a single[9] star in the northern circumpolar constellation of Camelopardalis,[8] located roughly 1,060 light years away from the Sun based on parallax.[1] It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of 5.11.[2] This object is moving closer to the Earth with a heliocentric radial velocity of −21 km/s.[4]
 | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 06h 53m 42.24792s[1] |
| Declination | +68° 53′ 17.9238″[1] |
| Apparent magnitude (V) | 5.11[2] |
| Characteristics | |
| Spectral type | B7 III[3] |
| B−V color index | −0.114±0.003[2] |
| Astrometry | |
| Radial velocity (Rv) | −21.0±4.2[4] km/s |
| Proper motion (μ) | RA: +5.001[1] mas/yr Dec.: +7.450[1] mas/yr |
| Parallax (π) | 3.0749±0.1698 mas[1] |
| Distance | 1,060 ± 60 ly (330 ± 20 pc) |
| Absolute magnitude (MV) | −2.26[2] |
| Details | |
| Mass | 5.01±0.31[5] M☉ |
| Radius | 4.4[6] R☉ |
| Luminosity | 724[7] L☉ |
| Temperature | 13,183[7] K |
| Rotational velocity (v sin i) | 190[7] km/s |
| Other designations | |
| 43 Cam, BD+69°394, FK5 259, GC 8957, HD 49340, HIP 33104, HR 2511, SAO 13986[8] | |
| Database references | |
| SIMBAD | data |
The stellar classification of 43 Camelopardalis is B7 III,[3] matching that of a blue giant. It is spinning rapidly with a projected rotational velocity of 190 km/s.[7] The star has five[5] times the mass of the Sun and about 4.4[6] times the Sun's radius. It is radiating 724[7] times the luminosity of the Sun from its photosphere at an effective temperature of 13,183 K.[7]
Chinese name
In Chinese language, 紫微右垣 (Zǐ Wēi Yòu Yuán), meaning Right Wall of Purple Forbidden Enclosure, refers to an asterism consisting of 43 Camelopardalis, α Draconis, κ Draconis, λ Draconis, 24 Ursae Majoris, α Camelopardalis and BK Camelopardalis.[10] Consequently, 43 Camelopardalis itself is known as 紫微右垣五 (Zǐ Wēi Yòu Yuán wǔ, English: the Fifth Star of Right Wall of Purple Forbidden Enclosure),[11] representing 上衛 (Shǎngwèi), meaning First Imperial Guard.[12] 上衛 (Shǎngwèi) is westernized into Shang Wei by R.H. Allen, the meaning is "Higher Guard", but it is not clearly designated.[13] The identification of Shangwei has varied across historical sources, and the IAU Working Group on Star Names has adopted it as a name for HD 42818, based on an older identification.[14]