43 Camelopardalis

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]

43 Camelopardalis
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[1] mas
Distance1,060 ± 60 ly
(330 ± 20 pc)
Absolute magnitude (MV)−2.26[2]
Details
Mass5.01±0.31[5] M☉
Radius4.4[6] R☉
Luminosity724[7] L☉
Temperature13,183[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
SIMBADdata

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, 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.), representing 上衛 (Shǎngwèi), meaning First Imperial Guard.[11] 上衛 (Shǎngwèi) is westernized into Shang Wei by R.H. Allen, the meaning is "Higher Guard", but it is not cleared designation[12]

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References
  1. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015.
  3. Lesh, Janet Rountree (December 1968), "The Kinematics of the Gould Belt: an Expanding Group?", Astrophysical Journal Supplement, 17: 371, Bibcode:1968ApJS...17..371L, doi:10.1086/190179.
  4. de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, A61.
  5. Hohle, M. M.; Neuhäuser, R.; Schutz, B. F. (April 2010), "Masses and luminosities of O- and B-type stars and red supergiants", Astronomische Nachrichten, 331 (4): 349, arXiv:1003.2335, Bibcode:2010AN....331..349H, doi:10.1002/asna.200911355.
  6. Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics (Third ed.), 367: 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451.
  7. Simón-Díaz, S.; et al. (January 2017), "The IACOB project. III. New observational clues to understand macroturbulent broadening in massive O- and B-type stars", Astronomy & Astrophysics, 597: 17, arXiv:1608.05508, Bibcode:2017A&A...597A..22S, doi:10.1051/0004-6361/201628541, A22.
  8. "43 Cam". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-04-22.
  9. Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x.
  10. (in Chinese) 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.
  11. English-Chinese Glossary of Chinese Star Regions, Asterisms and Star Name Archived 2008-09-24 at the Wayback Machine, Hong Kong Space Museum. Accessed on line November 23, 2010.
  12. Allen, Richard Hinckley (1963), "Camelopardalis", Star Names — Their Lore and Meaning, Dover edition.
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