Iota Reticuli

ι Reticuli, Latinized as Iota Reticuli, is a solitary,^[8] orange-hued star in the southern constellation of Reticulum. It is faintly visible to the naked eye, having a combined apparent visual magnitude of +4.97.^[2] Based upon an annual parallax shift of 10.22 mas as seen from Earth,^[1] it is located around 319 light years from the Sun. At present it is receding from the Sun with a radial velocity of +61 km/s,^[4] having come closest to the Sun 883,000 years ago at a distance of 212 light years.^[9] Iota Reticuli is moving through the Galaxy at a speed of 80.9 km/s relative to the Sun. Its projected Galactic orbit carries it between 12,300 and 25,100 light years from the center of the Galaxy.^[9]

Iota Reticuli

Location of ι Reticuli (circled)
Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Reticulum
Right ascension	04h 01m 18.15162s[1]
Declination	−61° 04′ 43.7559″[1]
Apparent magnitude (V)	+4.97[2]
Characteristics
Spectral type	K4 III[3]
U−B color index	+1.70[2]
B−V color index	+1.42[2]
Astrometry
Radial velocity (Rv)	+60.5±0.8[4] km/s
Proper motion (μ)	RA: +66.79[1] mas/yr Dec.: +94.80[1] mas/yr
Parallax (π)	10.22±0.16 mas[1]
Distance	319 ± 5 ly (98 ± 2 pc)
Absolute magnitude (MV)	+0.02[5]
Details
Radius	24.3+1.9 −4.7[6] R☉
Luminosity	179.8±5.1[6] L☉
Temperature	4290+261 −158[6] K
Other designations
ι Ret, CPD−61°293, HD 25728, HIP 18772, HR 1266, SAO 248927[7]
Database references
SIMBAD	data

This is an evolved K-type giant star with a stellar classification of K4 III.^[3] Having exhausted the supply of hydrogen at its core, the star cooled and expanded off the main sequence; at present it has 24^[6] times the girth of the Sun. It is radiating 180^[6] times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,290 K.^[6]