Star · M4
Gl 812A
Gl 812A is a main-sequence star of spectral type M4 in the constellation Aquarius, 52.8 light-years from the Sun.
| Other names | HIP 103393 |
|---|---|
| Constellation | Aquarius |
| Distance | 52.8 light-years (16.2 pc) |
| Apparent magnitude | magnitude 11.87 |
| Absolute magnitude | magnitude 10.83 |
| Spectral type | M4 |
| Surface temperature | 3,810 K |
| Luminosity | 0.0144 L☉ |
| Radius | 0.276 R☉ |
| Mass | 0.3 M☉ (estimated) |
| Right ascension (J2000) | 20h 56m 48.1s |
| Declination (J2000) | −4° 50′ 47″ |
| Space velocity (relative to the Sun) | 63.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.87. Visible from the whole Southern Hemisphere and north to latitude 85° N. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1973. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 936 thousand years.
The Sun seen from there
From a planet around Gl 812A, the Sun would look like a star of magnitude 5.87, in the direction where our sky has the constellation Hydra. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 812B 0.05 light-years
- 2MASSI J2057540-025230 2.96 light-years
- Gl 811.1 5.15 light-years
- Gl 816 5.76 light-years
- 2MASSI J2104149-103736 6.73 light-years
- Gl 828.2 7.60 light-years
- CWISEP J203821.53-064930.9 7.68 light-years
- GJ 4202 9.00 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.