Star · M2
GJ 4051
GJ 4051 is a main-sequence star of spectral type M2 in the constellation Serpens, 91.7 light-years from the Sun.
| Constellation | Serpens |
|---|---|
| Distance | 91.7 light-years (28.1 pc) |
| Apparent magnitude | magnitude 12.57 |
| Absolute magnitude | magnitude 10.33 |
| Spectral type | M2 |
| Surface temperature | 3,870 K |
| Luminosity | 0.0211 L☉ |
| Radius | 0.323 R☉ |
| Mass | 0.354 M☉ (estimated) |
| Right ascension (J2000) | 18h 19m 21.6s |
| Declination (J2000) | −5° 46′ 42″ |
| Space velocity (relative to the Sun) | 72.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.57. Visible from the whole Southern Hemisphere and north to latitude 84° N. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1934. 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 4051, the Sun would look like a star of magnitude 7.07, in the direction where our sky has the constellation Orion. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 89728 6.05 light-years
- HIP 90147 8.51 light-years
- HIP 88961 10.2 light-years
- GJ 4042 10.9 light-years
- BD-11 4672 11.1 light-years
- HIP 90035 12.9 light-years
- HIP 92250 13.5 light-years
- HIP 87464 14.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.