Psi Cassiopeiae

Psi Cassiopeiae

Map of the Bayer-designated stars in Cassiopeia. Psi Cassiopeiae is circled.
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Cassiopeia
Right ascension 01h 25m 56.02238s[1]
Declination +68° 07′ 48.0460″[1]
Apparent magnitude (V) +4.72[2]
Characteristics
Spectral type K0 III-IIIb CN0.5[3]
U−B color index +0.94
B−V color index +1.051[4]
Astrometry
Radial velocity (Rv)−12.7±0.3[2] km/s
Proper motion (μ) RA: +75.50±0.18[1] mas/yr
Dec.: +26.93±0.16[1] mas/yr
Parallax (π)16.72 ± 0.18 mas[1]
Distance195 ± 2 ly
(59.8 ± 0.6 pc)
Absolute magnitude (MV)0.869[4]
Details
ψ Cas A
Radius12[5] R☉
Luminosity50[6] L☉
Surface gravity (log g)2.74[7] cgs
Temperature4,952[6] K
Metallicity [Fe/H]−0.13[7] dex
Other designations
ψ Cas, 36 Cas, BD+67° 123, FK5 46, HD 8491, HIP 6692, HR 399, SAO 11751, ADS 1129, CCDM J01259+6808, WDS J01259+6808A[8]
Database references
SIMBADdata

Psi Cassiopeiae (ψ Cassiopeiae) is a binary star[9] system in the northern constellation of Cassiopeia.

The primary component, ψ Cassiopeiae A, is an orange K-type giant with an apparent magnitude of +5.0;[10][11] it is a double star, designated CCDM J01259+6808AB,[12] with a fourteenth magnitude star (component B) located 3 arcseconds from the primary. Located about 25 arcseconds distant there is a 9.8 magnitude optical companion CCDM J01259+6808CD, designated ψ Cassiopeiae B in older star catalogues,[10] which is itself another double;[10][13] CD comprises a 9.4 magnitude component C and a 10 magnitude component D.[14]

  1. ^ a b c d e Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Keenan1989 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Soubiran2008 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference PasinettiFracassini2001 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference McDonald2012 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Soubiran2010 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  10. ^ a b c Norton, Arthur P. (1973), Norton's Star Atlas, Gall & Inglis, p. 118, ISBN 0-85248-900-5
  11. ^ Vizier, retrieved 2009-04-13
  12. ^ "* psi Cas". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2009-04-13.
  13. ^ "BD+67 124". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2009-04-13.
  14. ^ VizieR Detailed Page, retrieved 2009-04-13