BE Camelopardalis

BE Camelopardalis

A light curve for BE Camelopardalis, plotted from Hipparcos data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Camelopardalis
Right ascension 03h 49m 31.27742s[2]
Declination +65° 31′ 33.5567″[2]
Apparent magnitude (V) 4.39[3] (4.35 - 4.48)[4]
Characteristics
Evolutionary stage asymptotic giant branch[5]
Spectral type M2 II[6]
B−V color index 1.870±0.029[3]
Variable type Lc[4]
Astrometry
Radial velocity (Rv)−1.70±1.47[3] km/s
Proper motion (μ) RA: +0.304[2] mas/yr
Dec.: −17.482[2] mas/yr
Parallax (π)4.10 ± 0.46 mas[2]
Distanceapprox. 800 ly
(approx. 240 pc)
Absolute magnitude (MV)−2.51[3]
Details
Mass2.93[7] M☉
Radius176[8] R☉
Luminosity4,613 - 4,786[8] L☉
Temperature3,615±170[8] K
Other designations
BE Cam, BD+65°369, HD 23475, HIP 17884, HR 1155, SAO 12916[9]
Database references
SIMBADdata

BE Camelopardalis is a solitary[10] variable star in the northern circumpolar constellation of Camelopardalis. It is visible to the naked eye as a faint, red-hued point of light with an apparent visual magnitude that fluctuates around 4.39.[3] The star is located roughly 800 light years away from the Sun based on stellar parallax.[2]

This object is an M-type bright giant with a stellar classification of M2 II,[6] and is currently on the asymptotic giant branch. It is classified as an irregular variable of subtype Lc and its brightness varies from magnitude +4.35 down to +4.48.[4] Having exhausted the supply of hydrogen at its core, the star has expanded to around 176[8] times the Sun's radius. It has 2.9[7] times the Sun's mass and is radiating over four thousand times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 3,615 K.[8]

  1. ^ Cite error: The named reference HipDataAccess was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Samus2017 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Eggen1992 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference apj628_2_973 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference hohle was invoked but never defined (see the help page).
  8. ^ a b c d e Messineo, M.; Brown, A. G. A. (2019). "A Catalog of Known Galactic K-M Stars of Class I Candidate Red Supergiants in Gaia DR2". The Astronomical Journal. 158 (1): 20. arXiv:1905.03744. Bibcode:2019AJ....158...20M. doi:10.3847/1538-3881/ab1cbd. S2CID 148571616.
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).