Star · M1
Gl 836.4
Gl 836.4 is a main-sequence star of spectral type M1 in the constellation Capricornus, 104.5 light-years from the Sun.
| Constellation | Capricornus |
|---|---|
| Distance | 104.5 light-years (32.0 pc) |
| Apparent magnitude | magnitude 12.80 |
| Absolute magnitude | magnitude 10.27 |
| Spectral type | M1 |
| Surface temperature | 3,820 K |
| Luminosity | 0.0235 L☉ |
| Radius | 0.35 R☉ |
| Mass | 0.371 M☉ (estimated) |
| Right ascension (J2000) | 21h 42m 07.3s |
| Declination (J2000) | −12° 09′ 55″ |
| Space velocity (relative to the Sun) | 105.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.80. Visible from the whole Southern Hemisphere and north to latitude 78° N. South of latitude 78° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1922. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.9 million years.
The Sun seen from there
From a planet around Gl 836.4, the Sun would look like a star of magnitude 7.36, in the direction where our sky has the constellation Leo. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 9757 5.61 light-years
- SIMP J21543454-1055308 7.30 light-years
- HIP 108468 10.5 light-years
- PSO J319.7576-13.0982 11.0 light-years
- 42 Cap 13.1 light-years
- HIP 106007 13.4 light-years
- GJ 4263 14.7 light-years
- HIP 105204 16.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.