Star · M3V
SDSS J205755.92-005006.7
SDSS J205755.92-005006.7 is a main-sequence star of spectral type M3V in the constellation Aquarius, 237.2 light-years from the Sun.
| Constellation | Aquarius |
|---|---|
| Distance | 237.2 light-years (72.7 pc) |
| Apparent magnitude | magnitude 21.96 |
| Absolute magnitude | magnitude 17.65 |
| Spectral type | M3V |
| Surface temperature | 3,170 K |
| Luminosity | 8.37 × 10⁻⁵ L☉ |
| Radius | 0.0304 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 20h 57m 55.9s |
| Declination (J2000) | −0° 50′ 08″ |
| Space velocity (relative to the Sun) | 25.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.96. Visible from the whole Southern Hemisphere and north to latitude 89° 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 1789. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.2 million years.
The Sun seen from there
From a planet around SDSS J205755.92-005006.7, the Sun would look like a star of magnitude 9.14, in the direction where our sky has the constellation Hydra. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 103237 6.29 light-years
- HIP 104390 12.3 light-years
- HIP 103391 13.2 light-years
- HIP 104293 16.9 light-years
- HIP 102272 17.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.