HD 224801
HD 224801, also known as CG Andromedae, is an Alpha2 Canum Venaticorum variable star in the constellation Andromeda. Located approximately 188 parsecs (610 ly) away, the star varies between apparent magnitudes 6.32 and 6.42 over a period of approximately 3.74 days.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 00h 00m 43.6345s |
| Declination | +45° 15′ 12.007″ |
| Apparent magnitude (V) | 6.32 – 6.42 |
| Characteristics | |
| Spectral type | A0IIspSiSrHg |
| Apparent magnitude (B) | 6.299 |
| Apparent magnitude (V) | 6.347 |
| Apparent magnitude (G) | 6.333 |
| Apparent magnitude (J) | 6.407 |
| Apparent magnitude (H) | 6.506 |
| Apparent magnitude (K) | 6.511 |
| U−B color index | -0.35 |
| B−V color index | -0.0425 |
| Variable type | Alpha² CVn |
| Astrometry | |
| Radial velocity (Rv) | −1.00±2.2 km/s |
| Proper motion (μ) | RA: +17.745 mas/yr Dec.: +0.607 mas/yr |
| Parallax (π) | 5.5784 ± 0.0405 mas |
| Distance | 585 ± 4 ly (179 ± 1 pc) |
| Absolute magnitude (MV) | 0.0 |
| Details | |
| Mass | 3.4 M☉ |
| Radius | 2.8 R☉ |
| Luminosity | 170 L☉ |
| Surface gravity (log g) | 4.12 cgs |
| Temperature | 11,900 K |
| Metallicity [Fe/H] | 0.98 dex |
| Rotation | 3.74 days |
| Rotational velocity (v sin i) | 30 km/s |
| Age | 239 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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