Star · ?
Gl 781.3
Gl 781.3 is a white dwarf of spectral type ? in the constellation Capricornus, 87.8 light-years from the Sun.
| Constellation | Capricornus |
|---|---|
| Distance | 87.8 light-years (26.9 pc) |
| Apparent magnitude | magnitude 14.44 |
| Absolute magnitude | magnitude 12.29 |
| Spectral type | ? |
| Surface temperature | 8,240 K |
| Luminosity | 0.00112 L☉ |
| Radius | 0.012 R☉ |
| Mass | 0.6 M☉ (estimated) |
| Right ascension (J2000) | 20h 10m 17.9s |
| Declination (J2000) | −21° 46′ 50″ |
| Space velocity (relative to the Sun) | 55.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.44. Visible from the whole Southern Hemisphere and north to latitude 68° N. South of latitude 68° S it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1938. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.6 million years.
The Sun seen from there
From a planet around Gl 781.3, the Sun would look like a star of magnitude 6.98, in the direction where our sky has the constellation Cancer. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 97805 7.91 light-years
- WISE J195500.42-254013.9 8.01 light-years
- HIP 102332 12.2 light-years
- GJ 1257 13.8 light-years
- Terebellum 13.9 light-years
- ρ Cap 14.1 light-years
- HIP 99550 14.6 light-years
- WISEA J205202.06-204313.0 15.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.