Star · ?
GJ 4259
GJ 4259 is a white dwarf of spectral type ? in the constellation Pegasus, 88.6 light-years from the Sun.
| Constellation | Pegasus |
|---|---|
| Distance | 88.6 light-years (27.2 pc) |
| Apparent magnitude | magnitude 15.66 |
| Absolute magnitude | magnitude 13.49 |
| Spectral type | ? |
| Surface temperature | 8,000 K |
| Luminosity | 3.63 × 10⁻⁴ L☉ |
| Radius | 0.012 R☉ |
| Mass | 0.6 M☉ (estimated) |
| Right ascension (J2000) | 22h 09m 47.5s |
| Declination (J2000) | +14° 29′ 43″ |
| Space velocity (relative to the Sun) | 45.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.66. Visible from the whole Northern Hemisphere and south to latitude 76° S. North of latitude 76° N 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 1937. 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 GJ 4259, the Sun would look like a star of magnitude 7.00, in the direction where our sky has the constellation Hydra. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- PSO J334.1193+19.8800 9.22 light-years
- HIP 110035 11.9 light-years
- Biham 12.8 light-years
- GJ 4227 13.2 light-years
- WISEA J221841.38+143003.4 13.9 light-years
- GJ 4252 14.5 light-years
- GJ 4265 14.6 light-years
- 2MASS J21321145+1341584 14.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.