Psi Cassiopeiae
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Template:Location mark Location of ψ Cassiopeiae (circled) | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Cassiopeia[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | +4.72[3] |
| Characteristics | |
| Evolutionary stage | red clump[4] |
| Spectral type | K0 III-IIIb CN0.5[5] |
| U−B Template:Engvar | +0.94 |
| B−V Template:Engvar | +1.051[6] |
| Astrometry | |
| Radial velocity (Rv) | Template:Val[3] km/s |
| Proper motion (μ) | RA: Template:Val[2] mas/yr Dec.: Template:Val[2] mas/yr |
| Parallax (π) | 16.72±0.18 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 0.869[6] |
| Details | |
| ψ Cas A | |
| Mass | 2.5[7] Template:Solar mass |
| Radius | 11[8] Template:Solar radius |
| Luminosity | 44[8] Template:Solar luminosity |
| Surface gravity (log g) | 2.74[9] cgs |
| Temperature | 4,442[8] K |
| Metallicity [Fe/H] | −0.13[6] dex |
| Age | 5.2[6] Gyr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[10] | |
| Database references | |
| SIMBAD | data |
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Psi Cassiopeiae (ψ Cassiopeiae) is a binary star[11] 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;[12][13] it is a double star, designated CCDM J01259+6808AB,[14] 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,[12] which is itself another double;[12][15] CD comprises a 9.4 magnitude component C and a 10 magnitude component D.[16]
References
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<ref>tag; no text was provided for refs namedKeenan1989 - ↑ a b c d Cite error: Invalid
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<ref>tag; no text was provided for refs namedcharbonnel2020 - ↑ a b c Cite error: Invalid
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<ref>tag; no text was provided for refs namedEggleton2008 - ↑ a b c Cite error: Invalid
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