Star · K7V
Gl 836.9B
Gl 836.9B is a main-sequence star of spectral type K7V in the constellation Indus, 62.1 light-years from the Sun.
| Constellation | Indus |
|---|---|
| Distance | 62.1 light-years (19.0 pc) |
| Apparent magnitude | magnitude 9.60 |
| Absolute magnitude | magnitude 8.20 |
| Spectral type | K7V |
| Surface temperature | 4,260 K |
| Luminosity | 0.0986 L☉ |
| Radius | 0.575 R☉ |
| Mass | 0.56 M☉ (estimated) |
| Right ascension (J2000) | 21h 46m 36.2s |
| Declination (J2000) | −57° 42′ 14″ |
| Space velocity (relative to the Sun) | 79.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.60. Visible from the whole Southern Hemisphere and north to latitude 32° N. South of latitude 32° 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 1964. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.1 million years.
The Sun seen from there
From a planet around Gl 836.9B, the Sun would look like a star of magnitude 6.23, in the direction where our sky has the constellation Ursa Major. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 836.9A 1.30 light-years
- Gl 855 5.40 light-years
- WISE J223204.50-573010.5 6.64 light-years
- Gl 857 7.15 light-years
- GJ 4222 9.35 light-years
- GJ 4273 9.62 light-years
- GJ 4249 10.5 light-years
- 2MASS J21513839-4853542 10.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.