64 Eridani, a white subgiant star in Eridanus
64 Eridani is a white subgiant star in the constellation Eridanus. At 290 light years away, it shines at an apparent visual magnitude of 4.78.
64 Eridani (HIP 23231)
64 Eridani is a white subgiant star in the constellation Eridanus. At 290 light years away, it shines at an apparent visual magnitude of 4.78. It is moving through the Galaxy at a speed of 41.3 km/s relative to the Sun. Its projected Galactic orbit carries it between 17,100 and 27,400 light years from the center of the Galaxy.
Sky position: RA 4h 59.9m, Dec -12° 32.4'
Common designations: S Eridani, 64 Eridani, HIP 23231, HD 32045
Brightest stars in Eridanus:
(list all)
| Rank | Mag. | Star |
| 32 | 4.47 | Tau-1 Eridani |
| 33 | 4.49 | Upsilon-1 Eridani |
| 34 | 4.57 | y Eridani |
| 35 | 4.59 | h Eridani |
| 36 | 4.62 | Tau-9 Eridani |
| 37 | 4.64 | Tau-8 Eridani |
| 38 | 4.74 | s Eridani |
| 39 | 4.74 | 17 Eridani |
| 40 | 4.76 | Angetenar |
41
| 4.78
) 64 Eridani
| Rank | Mag. | Star |
| 42 | 4.80 | Zibal |
| 43 | 4.80 | Psi Eridani |
| 44 | 4.86 | 15 Eridani |
| 45 | 4.87 | A Eridani |
| 46 | 4.91 | 45 Eridani |
| 47 | 4.99 | HR 1483 |
| 48 | 5.03 | 60 Eridani |
Hover over other bright stars to identify or click to jump.
Galactic Orbit of 64 Eridani
(compared to the Sun)
E
ccentricity: 23.3% vs. 16.0%Angle φ : 125.4°vs. 26.0°
Semi-major axis : 6,828 pc vs. 8,686 pc
Semi-minor axis: 6,641 pc vs. 8,574 pc
Focus-to-center
: 1,588 pcvs. 1,388 pcSemilatus rectum : 6,459 pc vs. 8,464 pc
Perigalacticon: 5,240 pc vs. 7,297 pc
Apogalacticon
: 8,417 pcvs. 10,074 pcSome Tabulated XHIP Data for 64 Eridani
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 74.98213778° ±0.17 mas | 39.68 ±0.17 mas/yr. |
| Declination: | -12.53720463° ±0.14 mas | -87.04 ±0.15 mas/yr. |
| Galactic Longitude: | 211.94049905° | 95.66 mas/yr. |
| Galactic Latitude: | -30.34463760° | 0.39 mas/yr. |
Parallax: 11.24 ± 0.23 mas
Spectrography
Spectral Type: A8IV 1995ApJS...99..135A.
Radial Velocity: -8.90 ±4.20 km/s [A rating] 2006AstL...32..759G.
Iron Abundance [Fe/H]:
n/a
Photometry
band
magnitude
Abs. Mag.
U
B
5.05
0.30
V
4.78
0.03
R
I
4.48
-0.27
J
4.04
-0.71
H
4.13
-0.61
K
4.01
-0.74
B-V: +0.27 V-I: +0.30
Derivations
Heliocentric distance: 88.92 pc (2.0% margin of error)
Galactocentric distance: 7,465 pc
Transverse velocity: 40.3 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | -65.1 pc | -40.6 pc | -44.9 pc |
| Velocity (U, V, W) | 27.8 km/s | -30.2 km/s | 4.6 km/s |