Star · G1V
Gl 23B
Gl 23B is a main-sequence star of spectral type G1V in the constellation Cetus, 68.7 light-years from the Sun.
| Constellation | Cetus |
|---|---|
| Distance | 68.7 light-years (21.0 pc) |
| Apparent magnitude | magnitude 6.40 |
| Absolute magnitude | magnitude 4.78 |
| Spectral type | G1V |
| Surface temperature | 5,960 K |
| Luminosity | 1.1 L☉ |
| Radius | 0.985 R☉ |
| Mass | 1.02 M☉ (estimated) |
| Right ascension (J2000) | 0h 35m 14.4s |
| Declination (J2000) | −3° 35′ 35″ |
| Space velocity (relative to the Sun) | 42.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.40). Visible from the whole Southern Hemisphere and north to latitude 86° N. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1957. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.2 million years.
The Sun seen from there
From a planet around Gl 23B, the Sun would look like a star of magnitude 6.45, in the direction where our sky has the constellation Virgo. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 13 Cet 0.67 light-years
- HIP 3979 6.89 light-years
- GJ 3037 8.22 light-years
- Gl 31.4 8.52 light-years
- CWISE J002727.44-012101.7 8.96 light-years
- TOI-260 9.24 light-years
- 2MASSI J0034568-070601 10.7 light-years
- HD 1461 10.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.