CC Andromedae
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 00h 43m 48.01231s[2] |
| Declination | +42° 16′ 55.7690″[2] |
| Apparent magnitude (V) | 9.19 – 9.46 variable [3] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | F3IV-V[3] |
| Apparent magnitude (R) | 9.40[4] |
| Apparent magnitude (B) | 9.693[5] |
| Apparent magnitude (V) | 9.347[5] |
| Apparent magnitude (G) | 9.3034[2] |
| Apparent magnitude (J) | 8.586[6] |
| Apparent magnitude (H) | 8.526[6] |
| Apparent magnitude (K) | 8.49[6] |
| U−B color index | 0.11[7] |
| B−V color index | 0.3162[5] |
| Variable type | δ Sct[3] |
| Astrometry | |
| Radial velocity (Rv) | −9.5±1.2[8] km/s |
| Proper motion (μ) | RA: -8.198[2] mas/yr Dec.: -3.920[2] mas/yr |
| Parallax (π) | 2.6339±0.0175 mas[2] |
| Distance | 1,238 ± 8 ly (380 ± 3 pc) |
| Absolute bolometric magnitude (Mbol) | 1.25[7] |
| Details[7] | |
| Mass | 1.98 M☉ |
| Radius | 3.04 R☉ |
| Surface gravity (log g) | 3.77±0.1 cgs |
| Temperature | 7,400 K |
| Rotational velocity (v sin i) | 20 km/s |
| Other designations | |
| 2MASS J00434801+4216557, BD+41 119, HIP 3432, SAO 36605, TYC 2805-1116-1, Gaia DR3 387336407206270080 | |
| Database references | |
| SIMBAD | data |
CC Andromedae (CC And) is a variable star in the constellation Andromeda. It is a pulsating star of the Delta Scuti type, with an apparent visual magnitude that varies between 9.19 and 9.46 with a periodicity of 3 hours.[3]
The variability of CC Andromedae was discovered accidentally, by Olin Eggen on October 22, 1952, when he attempted to use it as a comparison star for measuring the brightness and colors of stars in the Andromeda Galaxy which is about one degree away from CC Andromedae.[9]
The stellar classification of CC Andromedae is F3IV-V, as it shows intermediate characteristics between a subgiant and a main sequence star. The brightness variations are the result of 7 different pulsation modes, most of which are non-radial,[7] making it a suspected Gamma Doradus variable too.[10]
