Gamma Reticuli (HIP 18744)

Gamma Reticuli is a red giant star in the constellation Reticulum. At 469 light years away, it shines at an apparent visual magnitude of 4.48. It is moving through the Galaxy at a speed of 24.8 km/s relative to the Sun. Its projected Galactic orbit carries it between 24,100 and 39,200 light years from the center of the Galaxy.

Sky position: RA 4h 0.9m, Dec -62 9.6'

Common designations: Gamma Reticuli, HIP 18744, HD 25705

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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

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Galactic Orbit of Gamma Reticuli

(compared to the Sun)

Eccentricity: 23.9% vs. 16.0%

Angle φ : -7.4 vs. 26.0

Semi-major axis : 9,696 pc vs. 8,686 pc

Semi-minor axis: 9,416 pc vs. 8,574 pc

Focus-to-center: 2,316 pc vs. 1,388 pc

Semilatus rectum : 9,143 pc vs. 8,464 pc

Perigalacticon: 7,380 pc vs. 7,297 pc

Apogalacticon: 12,012 pc vs. 10,074 pc
 


Some Tabulated XHIP Data for Gamma Reticuli
(see also: SIMBAD)

Astrometry
2007A&A...474..653V
  Position Proper Motion
Right Ascension: 60.22418673 0.11 mas 3.01 0.11 mas/yr.
Declination: -62.15936899 0.11 mas 34.70 0.13 mas/yr.
     
Galactic Longitude: 274.80524714 -32.50 mas/yr.
Galactic Latitude: -43.21410853 -12.53 mas/yr.

Parallax: 6.95 0.11 mas


Spectrography

Spectral Type: M4III 1975MSS...C01....0H.

Radial Velocity: -7.00 2.70 km/s [A rating] 2006AstL...32..759G.

Iron Abundance [Fe/H]: n/a
 



Photometry
 
band magnitude Abs. Mag.
U
B 5.98 0.19
V 4.48 -1.31
R
I 2.28 -3.51
J 0.67 -5.12
H -0.23 -6.02
K -0.47 -6.26

  B-V: +1.50       V-I: +2.20


Derivations

Heliocentric distance: 143.84 pc (1.6% margin of error)

Galactocentric distance: 7,392 pc

Transverse velocity: 23.8 km/s

3D heliocentric position and motion:

toward:   

Galactic center Galactic rotation North Galactic Pole
Position ( X, Y, Z) 8.8 pc -104.5 pc -98.5 pc
Velocity (U, V, W) -23.0 km/s 9.1 km/s -1.4 km/s

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