Star · ?
GJ 2108
GJ 2108 is a white dwarf of spectral type ? in the constellation Apus, 68.1 light-years from the Sun.
| Constellation | Apus |
|---|---|
| Distance | 68.1 light-years (20.9 pc) |
| Apparent magnitude | magnitude 13.75 |
| Absolute magnitude | magnitude 12.15 |
| Spectral type | ? |
| Surface temperature | 8,000 K |
| Luminosity | 0.00125 L☉ |
| Radius | 0.012 R☉ |
| Mass | 0.6 M☉ (estimated) |
| Right ascension (J2000) | 14h 32m 10.3s |
| Declination (J2000) | −81° 20′ 47″ |
| Space velocity (relative to the Sun) | 71.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.75. Visible from the whole Southern Hemisphere and north to latitude 9° N. South of latitude 9° S it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1958. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.2 million years.
The Sun seen from there
From a planet around GJ 2108, the Sun would look like a star of magnitude 6.43, in the direction where our sky has the constellation Cepheus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 3863 7.57 light-years
- WISEA J162341.27-740230.4 11.4 light-years
- GJ 4045 13.2 light-years
- GJ 3773 13.8 light-years
- HIP 64690 15.0 light-years
- TOI-912 17.2 light-years
- GJ 3943 17.8 light-years
- WISE J062842.71-805725.0 18.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.