Star · M4
Gl 105B
Gl 105B is a main-sequence star of spectral type M4 in the constellation Cetus, 23.6 light-years from the Sun.
| Constellation | Cetus |
|---|---|
| Distance | 23.6 light-years (7.22 pc) |
| Apparent magnitude | magnitude 11.66 |
| Absolute magnitude | magnitude 12.37 |
| Spectral type | M4 |
| Surface temperature | 3,650 K |
| Luminosity | 0.00437 L☉ |
| Radius | 0.165 R☉ |
| Mass | 0.178 M☉ (estimated) |
| Right ascension (J2000) | 2h 36m 15.5s |
| Declination (J2000) | +6° 52′ 19″ |
| Space velocity (relative to the Sun) | 83.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.66. Visible from the whole Northern Hemisphere and south to latitude 83° S. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 2002. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 418 thousand years.
The Sun seen from there
From a planet around Gl 105B, the Sun would look like a star of magnitude 4.12, 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):
- 268 G. Cet 0.03 light-years
- PSO J043.5395+02.3995 2.82 light-years
- CD Cet 6.18 light-years
- SIMP J013656.5+093347.3 6.68 light-years
- GJ 3146 7.20 light-years
- GJ 3128 7.81 light-years
- 107 Psc 7.99 light-years
- Gl 109 8.05 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.