Star · K4
GJ 9782B
GJ 9782B is a main-sequence star of spectral type K4 in the constellation Pegasus, 132.8 light-years from the Sun.
| Constellation | Pegasus |
|---|---|
| Distance | 132.8 light-years (40.7 pc) |
| Apparent magnitude | magnitude 11.70 |
| Absolute magnitude | magnitude 8.65 |
| Spectral type | K4 |
| Surface temperature | 4,630 K |
| Luminosity | 0.0495 L☉ |
| Radius | 0.345 R☉ |
| Mass | 0.472 M☉ (estimated) |
| Right ascension (J2000) | 22h 26m 37.7s |
| Declination (J2000) | +4° 23′ 37″ |
| Space velocity (relative to the Sun) | 55.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.70. Visible from the whole Northern Hemisphere and south to latitude 86° S. 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 1893. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.4 million years.
The Sun seen from there
From a planet around GJ 9782B, the Sun would look like a star of magnitude 7.88, in the direction where our sky has the constellation Sextans. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 34 Peg 1.78 light-years
- HIP 111808 9.30 light-years
- ULAS J223756.91+071656.8 9.43 light-years
- HIP 112229 11.5 light-years
- HIP 111932 11.6 light-years
- HIP 110091 12.4 light-years
- HIP 109343 13.1 light-years
- Sadachbia 14.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.