CN Andromedae

CN Andromedae

The visual band light curve of CN Andromedae, adapted from a plot presented by Varol Keskin[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 00h 20m 30.54209s[2]
Declination +40° 13′ 33.80342″[2]
Apparent magnitude (V) 9.62 – 10.21 variable [3]
Characteristics
Spectral type F5V[3]
Apparent magnitude (B) 10.24[4]
Apparent magnitude (V) 9.706[4]
Apparent magnitude (G) 9.6637[2]
Apparent magnitude (J) 8.670[5]
Apparent magnitude (H) 8.452[5]
Apparent magnitude (K) 8.427[5]
B−V color index 0.49725[4]
Variable type EB[3]
Astrometry
Radial velocity (Rv)−24.2±1.0[6] km/s
Proper motion (μ) RA: −8.549±0.054 [2] mas/yr
Dec.: −35.291±0.024[2] mas/yr
Parallax (π)4.9670 ± 0.0425 mas[2]
Distance657 ± 6 ly
(201 ± 2 pc)
Orbit[6]
Period (P)0.4627952±0.000035 days
Semi-major axis (a)3.066±0.035
Inclination (i)68.51±0.17°
Periastron epoch (T)HJD 2445231.51710±0.00059
Details
Primary
Mass1.433±0.030[7] M☉
Radius1.48±0.03[7] R☉
Luminosity3.40[7] L☉
Surface gravity (log g)4.24[6] cgs
Temperature6,450[7] K
Secondary
Mass0.552±0.020[7] M☉
Radius0.95[7] R☉
Luminosity0.40[7] L☉
Surface gravity (log g)4.22[6] cgs
Temperature4,726[7] K
Other designations
2MASS J00203054+4013337, BD+39 59, TYC 2787-1815-1
Database references
SIMBADdata

CN Andromedae (CN And) is an eclipsing binary star in the constellation Andromeda. Its maximum apparent visual magnitude is 9.62 and drops down to a minimum of 10.2 during the main eclipse. It is classified as a Beta Lyrae variable with a period roughly of 0.4628 days.[3]

  1. ^ Cite error: The named reference keskin was invoked but never defined (see the help page).
  2. ^ a b c d e f 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.
  3. ^ a b c d Cite error: The named reference GCVS was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference TYCHO was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference 2MASS Cat was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference VanHamme2001 was invoked but never defined (see the help page).
  7. ^ a b c d e f g h Cite error: The named reference Siwak2010 was invoked but never defined (see the help page).