Star · M4
GJ 4387
GJ 4387 is a main-sequence star of spectral type M4 in the constellation Sculptor, 51.2 light-years from the Sun.
| Constellation | Sculptor |
|---|---|
| Distance | 51.2 light-years (15.7 pc) |
| Apparent magnitude | magnitude 12.80 |
| Absolute magnitude | magnitude 11.82 |
| Spectral type | M4 |
| Surface temperature | 3,820 K |
| Luminosity | 0.00564 L☉ |
| Radius | 0.171 R☉ |
| Mass | 0.199 M☉ (estimated) |
| Right ascension (J2000) | 23h 59m 50.6s |
| Declination (J2000) | −34° 06′ 43″ |
| Space velocity (relative to the Sun) | 70.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.80. Visible from the whole Southern Hemisphere and north to latitude 56° N. South of latitude 56° S it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1975. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 907 thousand years.
The Sun seen from there
From a planet around GJ 4387, the Sun would look like a star of magnitude 5.81, in the direction where our sky has the constellation Ursa Major. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.