Gl 1
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| Observation data Equinox J2000 |
|
|---|---|
| Constellation | Sculptor |
| Right ascension | 00h 05m 24.4s |
| Declination | -37° 21' 26" |
| Apparent magnitude (V) | 8.54 |
| Characteristics | |
| Spectral type | M1.5V |
| U-B color index | 1.00 |
| B-V color index | 1.45 |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | +22.9 km/s |
| Proper motion (μ) | RA: 5634.07 mas/yr Dec.: -2337.94 mas/yr |
| Parallax (π) | 229.20 ± 1.07 mas |
| Distance | 14.23 ± 0.07 ly (4.36 ± 0.02 pc) |
| Absolute magnitude (MV) | 10.34 |
| Other designations | |
Gliese 1 (Gl 1 or GJ 1) is a red dwarf star in the constellation Sculptor, which is found in the southern part of the sky. As it lies very close to the origin of the astronomical right ascension coordinates, it became the first star in both the Henry L. Giclas and the Luyten Half-Second star catalogues. It is one of the closest stars to the Sun, at an approximate distance of 14.2 light years. However it is too faint to be seen with the unaided eye. The stellar classification of this star has been rated from M1.5V to M3.0V by various sources.
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