Star · M2V
2MASS J21075409-4544064
2MASS J21075409-4544064 is a main-sequence star of spectral type M2V in the constellation Indus, 105.9 light-years from the Sun.
| Constellation | Indus |
|---|---|
| Distance | 105.9 light-years (32.5 pc) |
| Apparent magnitude | magnitude 21.76 |
| Absolute magnitude | magnitude 19.20 |
| Spectral type | M2V |
| Surface temperature | 3,300 K |
| Luminosity | 1.50 × 10⁻⁵ L☉ |
| Radius | 0.0119 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 07m 54.3s |
| Declination (J2000) | −45° 44′ 07″ |
| Space velocity (relative to the Sun) | 16.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.76. Visible from the whole Southern Hemisphere and north to latitude 44° N. South of latitude 44° S it never sets. 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 1920. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.9 million years.
The Sun seen from there
From a planet around 2MASS J21075409-4544064, the Sun would look like a star of magnitude 7.39, in the direction where our sky has the constellation Lynx. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 9726 10.3 light-years
- α Ind 11.9 light-years
- HIP 101905 12.0 light-years
- HIP 101317 12.2 light-years
- HIP 103820 12.9 light-years
- HIP 105606 12.9 light-years
- HIP 104738 13.3 light-years
- HIP 100184 15.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.