Star · ?
Gl 847B
Gl 847B is a main-sequence star of spectral type ? in the constellation Indus, 109.7 light-years from the Sun.
| Constellation | Indus |
|---|---|
| Distance | 109.7 light-years (33.6 pc) |
| Apparent magnitude | magnitude 13.70 |
| Absolute magnitude | magnitude 11.07 |
| Spectral type | ? |
| Surface temperature | 3,640 K |
| Luminosity | 0.0148 L☉ |
| Radius | 0.307 R☉ |
| Mass | 0.303 M☉ (estimated) |
| Right ascension (J2000) | 22h 04m 03.4s |
| Declination (J2000) | −69° 55′ 30″ |
| Space velocity (relative to the Sun) | 99.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.70. Visible from the whole Southern Hemisphere and north to latitude 20° N. South of latitude 20° 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 1916. 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 847B, the Sun would look like a star of magnitude 7.46, in the direction where our sky has the constellation Ursa Major. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 847A 0.10 light-years
- HIP 105441 10.9 light-years
- HIP 109245 11.3 light-years
- HIP 105612 12.1 light-years
- HIP 111566 14.9 light-years
- HIP 111686 15.2 light-years
- HIP 110812 16.2 light-years
- HIP 108158 17.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.