58 Eridani
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Eridanus |
| Right ascension | 04h 47m 36.29148s[1] |
| Declination | –16° 56′ 04.0413″[1] |
| Apparent magnitude (V) | 5.49[2] |
| Characteristics | |
| Spectral type | G1.5 V CH-0.5[3] |
| U−B color index | +0.13[2] |
| B−V color index | +0.64[2] |
| Variable type | BY Dra |
| Astrometry | |
| Radial velocity (Rv) | 23.00 ± 0.56[4] km/s |
| Proper motion (μ) | RA: 130.04 ± 0.37[1] mas/yr Dec.: 169.27 ± 0.28[1] mas/yr |
| Parallax (π) | 75.32 ± 0.36[1] mas |
| Distance | 43.3 ± 0.2 ly (13.28 ± 0.06 pc) |
| Details | |
| Mass | 1.053 ± 0.007[5] M☉ |
| Temperature | 5,820 ± 5.7[6] K |
| Metallicity [Fe/H] | 0.00[7] dex |
| Rotation | 7.6 days[7] |
| Age | 600[8] Myr |
| Other designations | |
58 Eridani is a main-sequence star in the constellation Eridanus. It is considered a solar analogue,[9] which means it has similar physical properties to the Sun. The star has a relatively high proper motion across the sky, and it is located about 43 light years distant. It is a probable member of the IC 2391 moving group of stars that share a common motion through space.[7]
The X-ray emissions from this star's corona indicate an age of less than a billion (109) years,[10] compared to 4.6 billion for the Sun, so it is still relatively young for a star of its mass. Starspot activity has also been detected, which varies from year to year.
A circumstellar disc of dust particles has been detected in orbit around 58 Eridani.[11]
See also
References
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External links
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