BC Canis Minoris

BC Canis Minoris

A visual band light curve for BC Canis Minoris, plotted from data presented by Tabur et al. (2009)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Canis Minor
Right ascension 07h 52m 07.19000s[2]
Declination 03° 16′ 38.4465″[2]
Apparent magnitude (V) 6.30[3] (6.14 to 6.42)[4]
Characteristics
Evolutionary stage AGB[5]
Spectral type M4/5III[6]
B−V color index 1.464±0.015[3]
Variable type SRb[4]
Astrometry
Radial velocity (Rv)−66.91±0.24[3] km/s
Proper motion (μ) RA: +49.415[2] mas/yr
Dec.: −78.835[2] mas/yr
Parallax (π)6.2916 ± 0.1748 mas[2]
Distance520 ± 10 ly
(159 ± 4 pc)
Absolute magnitude (MV)0.36[3]
Details
Radius60.4+7.6
−10.3[2] R☉
Luminosity496.7±15.9[2] L☉
Temperature3,507+344
−201[2] K
Other designations
BC CMi, BD+03°1824, HD 64052, HIP 38406, HR 3061, SAO 116054[7]
Database references
SIMBADdata

BC Canis Minoris is a variable star in the equatorial constellation of Canis Minor. It has a reddish hue and is just barely visible to the naked eye with an apparent visual magnitude that fluctuates around 6.30.[3] The distance to this object is approximately 520 light years based on parallax,[2] but it is drifting closer with a radial velocity of −67 km/s.[3]

This is an aging red giant star currently on the asymptotic giant branch[5] with a stellar classification of M4/5III.[6] It is a semi-regular variable of subtype SRb[4] with measured pulsation periods of 27.7, 143.3 and 208.3 days, and an average visual magnitude of 6.30.[8] With the supply of hydrogen at its core exhausted, it has cooled and expanded off the main sequence and now has around 60[2] times the girth of the Sun. On average, the star is radiating about 497[2] times the luminosity of the Sun from its swollen photosphere at an effective temperature of 3,507 K.[2]

  1. ^ Cite error: The named reference Tabur was invoked but never defined (see the help page).
  2. ^ a b c d e f g h i j k l Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  3. ^ a b c d e f 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. ^ a b Cite error: The named reference Eggen1992 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Houk1999 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Tabur2009 was invoked but never defined (see the help page).