Star · M4
GJ 9716
GJ 9716 is a main-sequence star of spectral type M4 in the constellation Indus, 40.8 light-years from the Sun.
| Other names | HIP 103910 |
|---|---|
| Constellation | Indus |
| Distance | 40.8 light-years (12.5 pc) |
| Apparent magnitude | magnitude 12.88 |
| Absolute magnitude | magnitude 12.40 |
| Spectral type | M4 |
| Surface temperature | 3,580 K |
| Luminosity | 0.00476 L☉ |
| Radius | 0.18 R☉ |
| Mass | 0.185 M☉ (estimated) |
| Right ascension (J2000) | 21h 03m 14.3s |
| Declination (J2000) | −56° 57′ 52″ |
| Space velocity (relative to the Sun) | 29.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.88. Visible from the whole Southern Hemisphere and north to latitude 33° N. South of latitude 33° 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 1985. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 723 thousand years.
The Sun seen from there
From a planet around GJ 9716, the Sun would look like a star of magnitude 5.31, 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 798 3.72 light-years
- WISE J212100.87-623921.6 5.19 light-years
- Gl 842 6.20 light-years
- Gl 774B 8.09 light-years
- Gl 774A 8.10 light-years
- HD 211970 8.50 light-years
- Gl 853B 9.18 light-years
- WISE J215949.48-480854.9 9.63 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.