58 Eridani, a yellow main-sequence star in Eridanus
58 Eridani is a yellow main-sequence star in the constellation Eridanus. At 43 light years away, it shines at an apparent visual magnitude of 5.49.
58 Eridani (HIP 22263)
58 Eridani is a yellow main-sequence star in the constellation Eridanus. At 43 light years away, it shines at an apparent visual magnitude of 5.49. The star's age is estimated to be 700 million years but is certainly no greater than 5.5 billion years. The iron abundance of 58 Eridani is 0 (100.0% of the Sun). It is moving through the Galaxy at a speed of 26.6 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,700 and 27,500 light years from the center of the Galaxy. It came closest to the Sun 421,000 years ago when it had brightened to magnitude 4.00 from a distance of 21.8 light years.
Sky position: RA 4h 47.6m, Dec -16° 55.8'
Common designations: 58 Eridani, HIP 22263, HD 30495, Gliese 177
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Brightest stars in Eridanus:
(list all)
| Rank | Mag. | Star |
| 65 | 5.32 | Rho-2 Eridani |
| 66 | 5.38 | Gliese 159 |
| 67 | 5.38 | HR 1367 |
| 68 | 5.39 | 63 Eridani |
| 69 | 5.44 | 4 Eridani |
| 70 | 5.44 | 37 Eridani |
| 71 | 5.45 | HD 26326 |
| 72 | 5.46 | HR 1487 |
| 73 | 5.48 | 30 Eridani |
74
| 5.49
) 58 Eridani
| Rank | Mag. | Star |
| 75 | 5.50 | HR 1016 |
| 76 | 5.50 | 62 Eridani |
| 77 | 5.52 | q1 Eridani |
| 78 | 5.53 | 22 Eridani |
| 79 | 5.53 | HR 1513 |
| 80 | 5.56 | 5 Eridani |
| 81 | 5.56 | HR 1098 |
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Galactic Orbit of 58 Eridani
(compared to the Sun)
E
ccentricity: 7.5% vs. 16.0%Angle φ : -44.7°vs. 26.0°
Semi-major axis : 7,847 pc vs. 8,686 pc
Semi-minor axis: 7,825 pc vs. 8,574 pc
Focus-to-center
: 587 pcvs. 1,388 pcSemilatus rectum : 7,803 pc vs. 8,464 pc
Perigalacticon: 7,260 pc vs. 7,297 pc
Apogalacticon
: 8,434 pcvs. 10,074 pcSome Tabulated XHIP Data for 58 Eridani
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 71.90088412° ±0.23 mas | 130.08 ±0.35 mas/yr. |
| Declination: | -16.93486735° ±0.21 mas | 169.31 ±0.27 mas/yr. |
| Galactic Longitude: | 215.36411515° | -109.39 mas/yr. |
| Galactic Latitude: | -34.80563784° | 183.36 mas/yr. |
Parallax: 75.32 ± 0.36 mas
Spectrography
Spectral Type: G1.5V CH-0.5 2006AJ....132..161G.
Radial Velocity: 23.00 ±0.56 km/s [A rating] 2005ApJS..159..141V.
Iron Abundance [Fe/H]:
0.00 dex
2009A&A...501..941H, 2007A&A...465..271R, 2006AJ....131.3069L, 2005ApJS..161..444T, 2005ApJS..159..141V, 2005AJ....129.1063L, 2004A&A...420..183A, 2004A&A...418..551M, 2004A&A...415.1153S, 2003A&A...410..527B, 2002NewA....7..211G, 2001A&A...373.1019S, 1994A&A...287..191P, 1981A&A...100...97G.
Photometry
| band | magnitude | Abs. Mag. |
| U | ||
| B | 6.12 | 5.51 |
| V | 5.49 | 4.87 |
| R | ||
| I | 4.87 | 4.25 |
| J | 4.47 | 3.85 |
| H | 4.12 | 3.50 |
| K | 4.00 | 3.38 |
B-V: +0.63 V-I: +0.62
Derivations
Heliocentric distance: 13.28 pc (0.5% margin of error)
Galactocentric distance: 7,409 pc
Transverse velocity: 13.4 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | -8.9 pc | -6.3 pc | -7.6 pc |
| Velocity (U, V, W) | -24.8 km/s | -9.1 km/s | -3.7 km/s |