Chi Cassiopeiae
Template:Location mark Location of χ 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) | +4.696[3] |
| Characteristics | |
| Evolutionary stage | red clump[4] |
| Spectral type | G9 IIIb[5] |
| U−B Template:Engvar | +0.762[3] |
| B−V Template:Engvar | +0.997[3] |
| Astrometry | |
| Radial velocity (Rv) | Template:Val[6] km/s |
| Proper motion (μ) | RA: Template:Val[2] mas/yr Dec.: Template:Val[2] mas/yr |
| Parallax (π) | 15.67±0.39 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | +0.52[7] |
| Details[7] | |
| Mass | 2.04 Template:Solar mass |
| Radius | Template:Val[8] Template:Solar radius |
| Luminosity | 67.6 Template:Solar luminosity |
| Surface gravity (log g) | 2.21 cgs |
| Temperature | 4,746 K |
| Metallicity [Fe/H] | −0.34 dex |
| Rotational velocity (v sin i) | Template:Val[9] km/s |
| Age | 1.0 Gyr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[10] | |
| Database references | |
| SIMBAD | data |
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Chi Cassiopeiae (χ Cassiopeiae) is a solitary,[11] yellow-hued star in the constellation Cassiopeia. It is visible to the naked eye with an apparent visual magnitude of +4.7.[3] Based upon an annual parallax shift of 15.67 mas as seen from Earth,[2] this system is located roughly 208 light years from the Sun. At that distance, the visual magnitude is diminished by an extinction of 0.18 due to interstellar dust.[6]
With a stellar classification of G9 IIIb,[5] it has the spectrum of an evolved, G-type giant star. It is a red clump star that it is generating energy through helium fusion at its core,[4] with an estimated age of a billion years.[7] The star has about double the mass of the Sun[7] and has expanded to 10.3 times the Sun's radius.[8] It is radiating 67.6 times the Sun's luminosity from its photosphere at an effective temperature of 4,746 K.[7]
References
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