Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Fornax |
Right ascension | 02h 50m 40.407s[1] |
Declination | −35° 40′ 33.06″[1] |
Apparent magnitude (V) | 5.47[2] |
Characteristics | |
Evolutionary stage | giant |
Spectral type | K2III[3] |
U−B color index | +1.31[2] |
B−V color index | +1.25[2] |
Astrometry | |
Radial velocity (Rv) | 13.10±0.12[1] km/s |
Proper motion (μ) | RA: +4.093[1] mas/yr Dec.: −54.551[1] mas/yr |
Parallax (π) | 6.6631 ± 0.0580 mas[1] |
Distance | 489 ± 4 ly (150 ± 1 pc) |
Absolute magnitude (MV) | −0.26[4] |
Details | |
Mass | 3.7[1] M☉ |
Radius | 21.9[1] R☉ |
Luminosity | 249[1] L☉ |
Surface gravity (log g) | 2.27[1] cgs |
Temperature | 4,717[1] K |
Metallicity [Fe/H] | 0.156[1] dex |
Rotational velocity (v sin i) | <1[5] km/s |
Age | 217[1] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Eta3 Fornacis (η3 Fornacis) is an orange giant in the constellation of Fornax. The star has a spectral type of K2III and an apparent magnitude of 5.47.[7] The star is visually close to, but unrelated with the similar stars η2 Fornacis and η1 Fornacis.[7] The star is located at approximately 489 light years away with a luminosity of about 249 L☉, and is a suspected binary system with the primary being the orange giant.[8]