Star · M3V
2MASSI J2107316-030733
2MASSI J2107316-030733 is a main-sequence star of spectral type M3V in the constellation Aquarius, 125.4 light-years from the Sun.
| Constellation | Aquarius |
|---|---|
| Distance | 125.4 light-years (38.5 pc) |
| Apparent magnitude | magnitude 21.70 |
| Absolute magnitude | magnitude 18.77 |
| Spectral type | M3V |
| Surface temperature | 3,110 K |
| Luminosity | 3.45 × 10⁻⁵ L☉ |
| Radius | 0.0203 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 07m 31.9s |
| Declination (J2000) | −3° 07′ 34″ |
| Space velocity (relative to the Sun) | 28.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.70. 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 1901. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.2 million years.
The Sun seen from there
From a planet around 2MASSI J2107316-030733, the Sun would look like a star of magnitude 7.76, 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 103766 7.16 light-years
- HIP 105066 8.48 light-years
- HIP 105261 8.56 light-years
- HIP 104610 9.21 light-years
- HIP 105483 11.6 light-years
- HIP 102914 12.7 light-years
- 2MASS J21163374-0729200 13.1 light-years
- HIP 105204 16.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.