Psi Cassiopeiae
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| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 01h25m56.0s |
| Declination | +68°07′48″ |
| Apparent magnitude (V) | +4.72 |
| Characteristics | |
| Spectral type | K0III |
| U−B color index | +0.94 |
| B−V color index | +1.05 |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | −12 km/s |
| Proper motion (μ) | RA: 75.07 mas/yr Dec.: 26.82 mas/yr |
| Parallax (π) | 16.89 ± 0.56 mas |
| Distance | 193.1 ly (59.2 pc) |
| Absolute magnitude (MV) | +0.86 |
| Other designations | |
Psi Cassiopeiae (ψ Cas, ψ Cassiopeiae) is a binary star in the constellation Cassiopeia. It is approximately 193.1 light years from Earth.
The primary component, ψ Cassiopeiae A, is an orange K-type giant with an apparent magnitude of +5.0;[1][2] it is a double star, designated CCDM J01259+6808AB,[3] 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,[1] which is itself another double;[1][4] CD comprises a 9.4 magnitude component C and a 10 magnitude component D.[5]
[edit] Notes
- ^ a b c Norton, Arthur P. (1973), Norton's Star Atlas, p. 118, ISBN 0-85248-900-5
- ^ Vizier, http://vizier.u-strasbg.fr/viz-bin/VizieR-S?HIC%206692, retrieved 2009-04-13
- ^ SIMBAD, http://simbad.u-strasbg.fr/simbad/sim-id?Ident=%40223308&Name=CCDM%20J01259%2b6808AB&submit=submit, retrieved 2009-04-13
- ^ SIMBAD, http://simbad.u-strasbg.fr/simbad/sim-id?Ident=%40223309&Name=CCDM%20J01259%2b6808CD&submit=submit, retrieved 2009-04-13, "CCDM J01259+6808CD -- Double or multiple star"
- ^ VizieR Detailed Page, http://vizier.u-strasbg.fr/viz-bin/VizieR-S?CCDM%20J01259%2b6808CD, retrieved 2009-04-13
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