Xi2 Capricorni
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Capricornus |
| Right ascension | 20h 12m 25.87020s |
| Declination | −12° 37′ 02.9967″ |
| Apparent magnitude (V) | +5.83 |
| Characteristics | |
| Spectral type | F7 V Fe−0.5 |
| B−V color index | +0.46 |
| Astrometry | |
| Radial velocity (Rv) | +27.1 km/s |
| Proper motion (μ) | RA: +192.35 mas/yr Dec.: −196.20 mas/yr |
| Parallax (π) | 36.10±0.41 mas |
| Distance | 90 ± 1 ly (27.7 ± 0.3 pc) |
| Absolute magnitude (MV) | 3.64±0.02 |
| Details | |
| Mass | 1.20+0.01 −0.02 M☉ |
| Surface gravity (log g) | 4.25±0.03 cgs |
| Temperature | 6,411±63 K |
| Metallicity [Fe/H] | −0.25±0.05 dex |
| Rotational velocity (v sin i) | 11 km/s |
| Age | 3.04+0.45 −0.51 Gyr |
| Other designations | |
| ξ2 Cap, 2 Cap, BD−13°5608, GC 28035, GJ 4139, HD 191862, HIP 99572, HR 7715, SAO 163337, CCDM J20124-1237, WDS J20124-1237A | |
| Database references | |
| SIMBAD | data |
Xi2 Capricorni (ξ2 Capricorni) is a yellow-white hued star in the southern constellation of Capricornus. It is dimly visible to the naked eye on a dark night, having an apparent visual magnitude of +5.83. Based upon an annual parallax shift of 36.10 mas as seen from Earth, this system is located 90 light years from the Sun.
This is an F-type main-sequence star with a stellar classification of F7 V Fe−0.5, where the suffix notation indicates the spectrum displays a mild underabundance of iron. It is around three billion years old with 1.2 times the mass of the Sun. Although considered a single star, there is reason to suspect it forms a wide physical pair with the visual magnitude 10.94 red dwarf star LP 754–50. They have a projected separation of (28.3±0.3)×103 AU, with LP 754–50 having an estimated 0.55 times the mass of the Sun. If they are gravitationally bound, their orbital period would be around 3.7 million years.