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 | |
Database references | |
SIMBAD | data |
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]
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]
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