Star · M3V
2MASSI J2057540-025230
2MASSI J2057540-025230 is a main-sequence star of spectral type M3V in the constellation Aquarius, 50.4 light-years from the Sun.
| Constellation | Aquarius |
|---|---|
| Distance | 50.4 light-years (15.5 pc) |
| Apparent magnitude | magnitude 20.71 |
| Absolute magnitude | magnitude 19.76 |
| Spectral type | M3V |
| Surface temperature | 3,130 K |
| Luminosity | 1.31 × 10⁻⁵ L☉ |
| Radius | 0.0123 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 20h 57m 54.1s |
| Declination (J2000) | −2° 52′ 32″ |
| Space velocity (relative to the Sun) | 7.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 20.71. Visible from the whole Southern Hemisphere and north to latitude 87° 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 1976. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 894 thousand years.
The Sun seen from there
From a planet around 2MASSI J2057540-025230, the Sun would look like a star of magnitude 5.78, 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):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.