Star · ?
GJ 3112
GJ 3112 is a white dwarf of spectral type ? in the constellation Hydrus, 31.7 light-years from the Sun.
| Constellation | Hydrus |
|---|---|
| Distance | 31.7 light-years (9.72 pc) |
| Apparent magnitude | magnitude 13.88 |
| Absolute magnitude | magnitude 13.94 |
| Spectral type | ? |
| Surface temperature | 8,000 K |
| Luminosity | 2.39 × 10⁻⁴ L☉ |
| Radius | 0.012 R☉ |
| Mass | 0.6 M☉ (estimated) |
| Right ascension (J2000) | 1h 42m 59.3s |
| Declination (J2000) | −67° 17′ 55″ |
| Space velocity (relative to the Sun) | 71.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.88. Visible from the whole Southern Hemisphere and north to latitude 23° N. South of latitude 23° S it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1994. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 562 thousand years.
The Sun seen from there
From a planet around GJ 3112, the Sun would look like a star of magnitude 4.77, in the direction where our sky has the constellation Draco. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEPC J014807.25-720258.7 4.76 light-years
- Gl 54 5.10 light-years
- Gl 127.1B 5.22 light-years
- Gl 127.1A 5.22 light-years
- ζ Tuc 5.80 light-years
- 2MASS J03400942-6724051 6.17 light-years
- HIP 117828 6.79 light-years
- p Eridani 7.51 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.