Star · K4V
GJ 3831A
GJ 3831A is a main-sequence star of spectral type K4V in the constellation Virgo, 94.5 light-years from the Sun.
| Other names | HIP 69562 |
|---|---|
| Constellation | Virgo |
| Distance | 94.5 light-years (29.0 pc) |
| Apparent magnitude | magnitude 10.39 |
| Absolute magnitude | magnitude 8.08 |
| Spectral type | K4V |
| Surface temperature | 4,180 K |
| Luminosity | 0.12 L☉ |
| Radius | 0.662 R☉ |
| Mass | 0.588 M☉ (estimated) |
| Right ascension (J2000) | 14h 14m 21.4s |
| Declination (J2000) | −15° 21′ 22″ |
| Space velocity (relative to the Sun) | 30.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.39. Visible from the whole Southern Hemisphere and north to latitude 75° N. South of latitude 75° S it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1931. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.7 million years.
The Sun seen from there
From a planet around GJ 3831A, the Sun would look like a star of magnitude 7.14, in the direction where our sky has the constellation Aries. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 540.2 9.58 light-years
- HIP 71469 12.1 light-years
- GJ 3832C 13.0 light-years
- 2MASSW J1438549-130910 15.9 light-years
- GJ 3864A 17.3 light-years
- HIP 70472 18.0 light-years
- WISEA J143422.31-083934.2 18.2 light-years
- GJ 3845 18.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.