Star · ?
Gl 799.1
Gl 799.1 is a white dwarf of spectral type ? in the constellation Capricornus, 71.0 light-years from the Sun.
| Other names | HIP 102207 |
|---|---|
| Constellation | Capricornus |
| Distance | 71.0 light-years (21.8 pc) |
| Apparent magnitude | magnitude 12.38 |
| Absolute magnitude | magnitude 10.69 |
| Spectral type | ? |
| Surface temperature | 13,560 K |
| Luminosity | 0.0111 L☉ |
| Radius | 0.012 R☉ |
| Mass | 0.6 M☉ (estimated) |
| Right ascension (J2000) | 20h 42m 34.7s |
| Declination (J2000) | −20° 04′ 36″ |
| Space velocity (relative to the Sun) | 38.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.38. Visible from the whole Southern Hemisphere and north to latitude 70° N. South of latitude 70° 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 1955. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.3 million years.
The Sun seen from there
From a planet around Gl 799.1, the Sun would look like a star of magnitude 6.52, 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):
- GJ 4179 7.87 light-years
- CWISE J205701.64-170407.3 7.91 light-years
- GJ 1257 8.45 light-years
- Gl 811 8.84 light-years
- Gl 800B 8.91 light-years
- Gl 800A 8.91 light-years
- PSO J318.5338-22.8603 9.92 light-years
- WISEA J201833.67-141720.3 10.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.