Eta Crateris (HIP 58188)

Eta Crateris is a white giant star in the constellation Crater. At 251 light years away, it shines at an apparent visual magnitude of 5.17. It is moving through the Galaxy at a speed of 23.7 km/s relative to the Sun. Its projected Galactic orbit carries it between 21,700 and 24,100 light years from the center of the Galaxy. It came closest to the Sun 2.0 million years ago when it had brightened to magnitude 4.61 from a distance of 195 light years.

Sky position: RA 11h 56.0m, Dec -17 9'

Common designations: Eta Crateris, 30 Crateris, HIP 58188, HD 103632

Galaxies
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Brightest stars in Crater:
(list all)

1

|    3.56

)   Labr

2

|    4.06

)   Gamma Crateris

3

|    4.08

)   Alkes

4

|    4.46

)   Beta Crateris

5

|    4.70

)   Theta Crateris

6

|    4.71

)   Zeta Crateris

7

|    4.81

)   Epsilon Crateris

8

|    5.08

)   Lambda Crateris

9

|    5.17

)   Eta Crateris

10

|    5.48

)   Iota Crateris

11

|    5.51

)   HD 95808

12

|    5.65

)   HR 4255

13

|    5.77

)   HR 4428

14

|    5.86

)   HR 4289

15

|    5.88

)   HR 4284

16

|    5.93

)   Kappa Crateris

17

|    5.94

)   HR 4446

Location of Eta Crateris circled
Map detail from Stars of the Northern Hemisphere
Hover over other bright stars to identify or click to jump.


Galactic Orbit of Eta Crateris

(compared to the Sun)

Eccentricity: 5.3% vs. 16.0%

Angle φ : 163.1 vs. 26.0

Semi-major axis : 7,034 pc vs. 8,686 pc

Semi-minor axis: 7,024 pc vs. 8,574 pc

Focus-to-center: 370 pc vs. 1,388 pc

Semilatus rectum : 7,015 pc vs. 8,464 pc

Perigalacticon: 6,664 pc vs. 7,297 pc

Apogalacticon: 7,404 pc vs. 10,074 pc
 


Some Tabulated XHIP Data for Eta Crateris
(see also: SIMBAD)

Astrometry
2007A&A...474..653V
  Position Proper Motion
Right Ascension: 179.00409833 0.18 mas -49.68 0.17 mas/yr.
Declination: -17.15080883 0.14 mas -7.61 0.14 mas/yr.
     
Galactic Longitude: 284.47206217 -45.22 mas/yr.
Galactic Latitude: 43.72547069 -21.92 mas/yr.

Parallax: 12.97 0.23 mas


Spectrography

Spectral Type: A1III 1995ApJS...99..135A.

Radial Velocity: 15.00 4.20 km/s [A rating] 2006AstL...32..759G.

Iron Abundance [Fe/H]: n/a
 



Photometry
 
band magnitude Abs. Mag.
U
B 5.15 0.71
V 5.17 0.74
R
I 5.17 0.73
J 5.18 0.75
H 5.21 0.78
K 5.18 0.74

  B-V: -0.02       V-I: 0.00


Derivations

Heliocentric distance: 77.07 pc (1.8% margin of error)

Galactocentric distance: 7,386 pc

Transverse velocity: 18.4 km/s

3D heliocentric position and motion:

toward:   

Galactic center Galactic rotation North Galactic Pole
Position ( X, Y, Z) 13.9 pc -53.9 pc 53.3 pc
Velocity (U, V, W) -11.9 km/s -20.0 km/s 4.6 km/s

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