Star · M2
GJ 3870
GJ 3870 is a main-sequence star of spectral type M2 in the constellation Virgo, 112.3 light-years from the Sun.
| Constellation | Virgo |
|---|---|
| Distance | 112.3 light-years (34.4 pc) |
| Apparent magnitude | magnitude 12.58 |
| Absolute magnitude | magnitude 9.90 |
| Spectral type | M2 |
| Surface temperature | 3,680 K |
| Luminosity | 0.0408 L☉ |
| Radius | 0.498 R☉ |
| Mass | 0.449 M☉ (estimated) |
| Right ascension (J2000) | 14h 52m 31.7s |
| Declination (J2000) | +0° 10′ 02″ |
| Space velocity (relative to the Sun) | 57.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.58. Visible from the whole Southern Hemisphere and north to latitude 90° N. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1914. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.0 million years.
The Sun seen from there
From a planet around GJ 3870, the Sun would look like a star of magnitude 7.51, in the direction where our sky has the constellation Cetus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- SIMP J1501530-013506 5.86 light-years
- Mönch 8.56 light-years
- HIP 73309 10.6 light-years
- 2MASS J14313545-0313117 12.2 light-years
- ULAS J150140.69-005146.8 12.8 light-years
- HIP 73245 13.6 light-years
- HIP 71824 14.8 light-years
- HIP 73717 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.