Iota Reticuli, an orange giant star in Reticulum
Iota Reticuli is an orange giant star in the constellation Reticulum. At 319 light years away, it shines at an apparent visual magnitude of 4.97.
Iota Reticuli (HIP 18772)
Iota Reticuli is an orange giant star in the constellation Reticulum. At 319 light years away, it shines at an apparent visual magnitude of 4.97. It 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. It came closest to the Sun 883,000 years ago when it had brightened to magnitude 4.08 from a distance of 212 light years.
Sky position: RA 4h 1.3m, Dec -61° 4.8'
Common designations: Iota Reticuli, HIP 18772, HD 25728
Brightest stars in Reticulum:
(list all)
| Rank | Mag. | Star |
| 1 | 3.33 | Alpha Reticuli |
| 2 | 3.84 | Beta Reticuli |
| 3 | 4.44 | Epsilon Reticuli |
| 4 | 4.48 | Gamma Reticuli |
| 5 | 4.56 | Delta Reticuli |
| 6 | 4.71 | Kappa Reticuli |
7
| 4.97
) Iota Reticuli
| Rank | Mag. | Star |
| 8 | 5.24 | Zeta-2 Reticuli |
| 9 | 5.24 | Eta Reticuli |
| 10 | 5.45 | HR 1340 |
| 11 | 5.53 | Zeta-1 Reticuli |
| 12 | 5.74 | HR 1435 |
| 13 | 5.79 | HR 1475 |
| 14 | 5.81 | HR 1092 |
| 15 | 5.88 | Theta Reticuli |
| 16 | 5.94 | HR 1416 |
| 17 | 6.03 | HR 1014 |
Vistas of Many Worlds
A Journey Through Space and Time
Galactic Orbit of Iota Reticuli
(compared to the Sun)
E
ccentricity: 34.4% vs. 16.0%Angle φ : -156.7°vs. 26.0°
Semi-major axis : 5,738 pc vs. 8,686 pc
Semi-minor axis: 5,387 pc vs. 8,574 pc
Focus-to-center
: 1,974 pcvs. 1,388 pcSemilatus rectum : 5,058 pc vs. 8,464 pc
Perigalacticon: 3,764 pc vs. 7,297 pc
Apogalacticon
: 7,711 pcvs. 10,074 pcSome Tabulated XHIP Data for Iota Reticuli
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 60.32529607° ±0.15 mas | 66.76 ±0.15 mas/yr. |
| Declination: | -61.07905151° ±0.15 mas | 94.80 ±0.17 mas/yr. |
| Galactic Longitude: | 273.43454142° | -114.14 mas/yr. |
| Galactic Latitude: | -43.63648906° | 20.40 mas/yr. |
Parallax: 10.22 ± 0.16 mas
Spectrography
Spectral Type: K4III 1975MSS...C01....0H.
Radial Velocity: 60.50 ±0.80 km/s [A rating] 2006AstL...32..759G.
Iron Abundance [Fe/H]:
n/a
Photometry
band
magnitude
Abs. Mag.
U
B
6.36
1.40
V
4.97
0.02
R
I
3.72
-1.24
J
2.57
-2.38
H
1.90
-3.05
K
1.75
-3.21
B-V: +1.39 V-I: +1.25
Derivations
Heliocentric distance: 97.82 pc (1.6% margin of error)
Galactocentric distance: 7,396 pc
Transverse velocity: 53.8 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | 4.2 pc | -70.7 pc | -67.5 pc |
| Velocity (U, V, W) | -49.8 km/s | -53.4 km/s | -34.9 km/s |