X Caeli
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Caelum |
| Right ascension | 05h 04m 26.157s |
| Declination | −35° 42′ 18.38″ |
| Apparent magnitude (V) | 6.28 – 6.39 (6.43 + 9.65) |
| Characteristics | |
| Spectral type | F2 IV/V |
| B−V color index | 0.311±0.006 |
| Variable type | δ Sct |
| Astrometry | |
| Radial velocity (Rv) | +6.4±0.8 km/s |
| Proper motion (μ) | RA: +28.361 mas/yr Dec.: +40.338 mas/yr |
| Parallax (π) | 9.7026±0.0221 mas |
| Distance | 336.2 ± 0.8 ly (103.1 ± 0.2 pc) |
| Absolute magnitude (MV) | 1.36 |
| Details | |
| X Cae A | |
| Mass | 1.52 M☉ |
| Radius | 3.43±0.32 R☉ |
| Luminosity | 23.65 L☉ |
| Surface gravity (log g) | 3.80 cgs |
| Temperature | 7,227±246 K |
| Rotational velocity (v sin i) | 69.0±1.0 km/s |
| Age | 961 Myr |
| Other designations | |
| γ2 Cae, γ2 Caeli, X Caeli, BD+27°2400, GC 6214, HD 32846, HIP 23596, HR 1653, SAO 195534, CCDM 05044-3542, WDS J05044-3542AB | |
| Database references | |
| SIMBAD | data |
X Caeli is a binary star system in the southern constellation of Caelum. It has the Bayer designation Gamma2 Caeli, which is Latinized from γ2 Caeli and abbreviated Gamma2 Cae or γ2 Cae; X Caeli is the system's variable star designation. This system is barely visible to the naked eye with a combined apparent visual magnitude of 6.32. Based upon an annual parallax shift of 9.7 mas, it is located at a distance of 336 light-years (103 pc) from Earth. The system is moving further away from the Sun with a radial velocity of +6 km/s.