Star · M0V
GJ 4231
GJ 4231 is a main-sequence star of spectral type M0V in the constellation Pegasus, 136.7 light-years from the Sun.
| Other names | HIP 107931 |
|---|---|
| Constellation | Pegasus |
| Distance | 136.7 light-years (41.9 pc) |
| Apparent magnitude | magnitude 11.63 |
| Absolute magnitude | magnitude 8.52 |
| Spectral type | M0V |
| Surface temperature | 3,920 K |
| Luminosity | 0.105 L☉ |
| Radius | 0.705 R☉ |
| Mass | 0.57 M☉ (estimated) |
| Right ascension (J2000) | 21h 52m 01.5s |
| Declination (J2000) | +5° 32′ 34″ |
| Space velocity (relative to the Sun) | 41.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.63. Visible from the whole Northern Hemisphere and south to latitude 84° 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 1889. 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 4231, the Sun would look like a star of magnitude 7.94, 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):
- BD+05 4868 A 6.68 light-years
- HIP 108473 8.09 light-years
- HIP 108820 10.6 light-years
- HIP 108525 12.5 light-years
- HIP 109095 12.5 light-years
- SDSS J214046.55+011259.7 16.2 light-years
- HIP 106942 16.3 light-years
- HIP 109343 16.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.