Eta3 Fornacis

η3 Fornacis
Location of η3 Fornacis (top star inside circle)
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]
Distance489 ± 4 ly
(150 ± 1 pc)
Absolute magnitude (MV)−0.26[4]
Details
Mass3.7[1] M☉
Radius21.9[1] R☉
Luminosity249[1] L☉
Surface gravity (log g)2.27[1] cgs
Temperature4,717[1] K
Metallicity [Fe/H]0.156[1] dex
Rotational velocity (v sin i)<1[5] km/s
Age217[1] Myr
Other designations
η3 For, CD−36°1070, HD 17829, HIP 13265, HR 848, SAO 193944[6]
Database references
SIMBADdata

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]

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