Eta Reticuli (HIP 20384)

Eta Reticuli is a yellow giant star in the constellation Reticulum. At 384 light years away, it shines at an apparent visual magnitude of 5.24. It is moving through the Galaxy at a speed of 117.6 km/s relative to the Sun. Its projected Galactic orbit carries it between 11,700 and 31,600 light years from the center of the Galaxy.

Sky position: RA 4h 21.9m, Dec -63° 23.4'

Common designations: Eta Reticuli, HIP 20384, HD 28093

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Brightest stars in Reticulum:
(list all)

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

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


Galactic Orbit of Eta Reticuli
(compared to the Sun)

Eccentricity: 45.8% vs. 16.0%

Angle φ : -129.3° vs. 26.0°

Semi-major axis : 6,643 pc vs. 8,686 pc

Semi-minor axis: 5,906 pc vs. 8,574 pc

Focus-to-center: 3,042 pc vs. 1,388 pc

Semilatus rectum : 5,250 pc vs. 8,464 pc

Perigalacticon: 3,601 pc vs. 7,297 pc

Apogalacticon: 9,685 pc vs. 10,074 pc
 
Some Tabulated XHIP Data for Eta Reticuli
(see also: SIMBAD)

Astrometry
 2007A&A...474..653V
  Position Proper Motion
Right Ascension: 65.47173218° ±0.16 mas 85.54 ±0.14 mas/yr.
Declination: -63.38681532° ±0.18 mas 174.62 ±0.19 mas/yr.
     
Galactic Longitude: 275.01192763° -193.83 mas/yr.
Galactic Latitude: -40.52318849° 15.51 mas/yr.

Parallax: 8.48 ± 0.18 mas

Spectrography

Spectral Type: G8III 1975MSS...C01....0H.

Radial Velocity: 45.00 ±0.80 km/s [A rating] 2006AstL...32..759G.

Iron Abundance [Fe/H]: n/a
 


Photometry
 
band magnitude Abs. Mag.
U
B 6.20 0.84
V 5.24 -0.12
R
I 4.43 -0.93
J 3.87 -1.48
H 3.27 -2.09
K 3.16 -2.20

  B-V: +0.96       V-I: +0.81

Derivations

Heliocentric distance: 117.86 pc (2.1% margin of error)

Galactocentric distance: 7,393 pc

Transverse velocity: 108.6 km/s

3D heliocentric position and motion:

toward:   

Galactic center Galactic rotation North Galactic Pole
Position ( X, Y, Z) 7.8 pc -89.2 pc -76.6 pc
Velocity (U, V, W) -104.4 km/s -49.1 km/s -22.7 km/s

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