Star · M3V
2MASSI J1045240-014957
2MASSI J1045240-014957 is a main-sequence star of spectral type M3V in the constellation Sextans, 55.5 light-years from the Sun.
| Constellation | Sextans |
|---|---|
| Distance | 55.5 light-years (17.0 pc) |
| Apparent magnitude | magnitude 20.87 |
| Absolute magnitude | magnitude 19.72 |
| Spectral type | M3V |
| Surface temperature | 3,090 K |
| Luminosity | 1.49 × 10⁻⁵ L☉ |
| Radius | 0.0135 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 10h 45m 23.4s |
| Declination (J2000) | −1° 49′ 58″ |
| Space velocity (relative to the Sun) | 41.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 20.87. Visible from the whole Southern Hemisphere and north to latitude 88° N. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1971. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 984 thousand years.
The Sun seen from there
From a planet around 2MASSI J1045240-014957, the Sun would look like a star of magnitude 5.98, in the direction where our sky has the constellation Aquarius. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 399 6.76 light-years
- SDSS J104842.84+011158.5 7.09 light-years
- Gl 398 8.79 light-years
- 2MASSI J1010148-040649 8.84 light-years
- GJ 3637 8.99 light-years
- GJ 3633 9.44 light-years
- WISE J112438.12-042149.7 9.75 light-years
- SDSSp J111010.01+011613.1 10.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.