Kappa Fornacis
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Fornax |
| Right ascension | 02h 22m 32.60343s |
| Declination | −23° 48′ 00.4878″ |
| Apparent magnitude (V) | 5.3187±0.0005 |
| Characteristics | |
| κ For A | |
| Spectral type | G1V-IV |
| B−V color index | 0.608±0.017 (system total) |
| Kappa Fornacis Bab | |
| Spectral type | ~M0V / ~M0V |
| Astrometry | |
| κ For A | |
| Radial velocity (Rv) | 16.67±0.06 km/s |
| Proper motion (μ) | RA: 150.725 mas/yr Dec.: 5.364 mas/yr |
| Parallax (π) | 44.0905±0.2799 mas |
| Distance | 74.0 ± 0.5 ly (22.7 ± 0.1 pc) |
| Absolute magnitude (MV) | +3.48 |
| κ For Bab | |
| Orbit | |
| Primary | κ For A |
| Companion | κ For Bab |
| Period (P) | 25.81±0.15 years |
| Semi-major axis (a) | 0.521 ± 0.004″ |
| Eccentricity (e) | 0.339±0.013 |
| Inclination (i) | 50.4±0.5° |
| Longitude of the node (Ω) | 139.8±1.4° |
| Periastron epoch (T) | 1988.89±0.17 |
| Argument of periastron (ω) (secondary) | 266.3±1.0° |
| Semi-amplitude (K1) (primary) | 5.23±0.13 km/s |
| Orbit | |
| Primary | κ For Ba |
| Companion | κ For Bb |
| Period (P) | approx. 3.666 days |
| Eccentricity (e) | 0 (assumed) |
| Semi-amplitude (K1) (primary) | approx. 83 km/s |
| Semi-amplitude (K2) (secondary) | approx. 83 km/s |
| Details | |
| κ For A | |
| Mass | 1.20±0.05 M☉ |
| Surface gravity (log g) | 3.99±0.15 cgs |
| Temperature | 5,853±49 K |
| Metallicity [Fe/H] | −0.06±0.05 dex |
| Age | 5.7±0.6 Gyr |
| κ For Bab | |
| Mass | 1.05±0.18 (subsystem total)M☉ approx. 0.53±0.09 / 0.53±0.09 M☉ |
| Other designations | |
| CD−24°1038, GJ 97, HD 14802, HIP 11072, HR 695, SAO 167736 | |
| Database references | |
| SIMBAD | data |
Kappa Fornacis (κ For) is a star system that lies approximately 72 light-years away. The system consists of a somewhat evolved primary orbited by a massive, 'dark' secondary that is actually itself a close red dwarf binary, making a hierarchal triple system.