Wolf 359
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 Wolf 359 is shown near the ecliptic in the southern region of Leo. It is invisible to the naked eye. |
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| Observation data Epoch J2000 |
|
|---|---|
| Constellation | Leo |
| Right ascension | 10h 56m 29.2s |
| Declination | +07° 00' 53" |
| Apparent magnitude (V) | 13.53 |
| Spectral Characteristics | |
| Spectral type | M6 V |
| U-B color index | 1.34 |
| B-V color index | 2.01 |
| Variable type | Flare star |
| Astrometry | |
| Radial velocity (Rv) | +14.9 km/s |
| Proper motion (μ) | RA: -3828 mas/yr Dec.: -2720 mas/yr |
| Parallax (π) | 419.10 ± 2.10 mas |
| Distance | 7.78 ± 0.04 ly (2.39 ± 0.01 pc) |
| Absolute magnitude (MV) | 16.64 |
| Physical Characteristics | |
| Mass | 0.09-0.13 M☉ |
| Radius | 0.16-0.19 R☉ |
| Luminosity | 0.00002 L☉ |
| Temperature | 3,500 K |
| Metallicity | |
| Rotation | |
| Age | <1.0 × 1010 years |
| Other designations | |
Wolf 359 is a star located approximately 2.4 parsecs or 7.80 light years from Earth's solar system. It is one of the nearest stars to the Sun; only the Alpha Centauri system and Barnard's star are known to be closer. Its celestial position is in the constellation Leo, near the ecliptic. It is an extremely faint red dwarf, too dim to be visible to the naked eye, and it is a flare star.
The star was discovered using astrophotography by German astronomer Max Wolf in 1918. Its closest neighbor is Ross 128, 1.16 pc or 3.79 ly away.
