Star · ?
GJ 4381
GJ 4381 is a main-sequence star of spectral type ? in the constellation Andromeda, 82.7 light-years from the Sun.
| Constellation | Andromeda |
|---|---|
| Distance | 82.7 light-years (25.3 pc) |
| Apparent magnitude | magnitude 12.64 |
| Absolute magnitude | magnitude 10.62 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.0218 L☉ |
| Radius | 0.37 R☉ |
| Mass | 0.359 M☉ (estimated) |
| Right ascension (J2000) | 23h 57m 50.1s |
| Declination (J2000) | +38° 37′ 46″ |
| Space velocity (relative to the Sun) | 26.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.64. Visible from the whole Northern Hemisphere and south to latitude 51° S. North of latitude 51° N 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 1943. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.5 million years.
The Sun seen from there
From a planet around GJ 4381, the Sun would look like a star of magnitude 6.85, in the direction where our sky has the constellation Centaurus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 4369 6.49 light-years
- HIP 1598 6.53 light-years
- HIP 117492 10.5 light-years
- 2MASS J23392527+3507165 10.8 light-years
- WISE J233543.79+422255.2 11.7 light-years
- 2MASS J23512200+3010540 12.5 light-years
- λ And 12.8 light-years
- GJ 4346 12.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.