Star · M2V
GJ 2043A
GJ 2043A is a main-sequence star of spectral type M2V in the constellation Orion, 56.0 light-years from the Sun.
| Other names | HIP 25716 |
|---|---|
| Constellation | Orion |
| Distance | 56.0 light-years (17.2 pc) |
| Apparent magnitude | magnitude 10.55 |
| Absolute magnitude | magnitude 9.37 |
| Spectral type | M2V |
| Surface temperature | 3,790 K |
| Luminosity | 0.056 L☉ |
| Radius | 0.548 R☉ |
| Mass | 0.486 M☉ (estimated) |
| Right ascension (J2000) | 5h 29m 27.0s |
| Declination (J2000) | +15° 34′ 38″ |
| Space velocity (relative to the Sun) | 13.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.55. Visible from the whole Northern Hemisphere and south to latitude 74° S. North of latitude 74° N it never sets. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1970. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 994 thousand years.
The Sun seen from there
From a planet around GJ 2043A, the Sun would look like a star of magnitude 6.01, in the direction where our sky has the constellation Serpens. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 2043B 0.03 light-years
- CWISE J051427.35+200447.7 5.70 light-years
- 104 Tau 7.06 light-years
- Gl 188B 7.06 light-years
- CWISE J053204.60+111955.1 7.39 light-years
- CWISE J060149.45+141955.2 7.98 light-years
- 111 Tau 8.71 light-years
- Gl 201 8.84 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.