Star · M3V
DENIS J2139136-352950
DENIS J2139136-352950 is a main-sequence star of spectral type M3V in the constellation Piscis Austrinus, 148.4 light-years from the Sun.
| Constellation | Piscis Austrinus |
|---|---|
| Distance | 148.4 light-years (45.5 pc) |
| Apparent magnitude | magnitude 21.89 |
| Absolute magnitude | magnitude 18.60 |
| Spectral type | M3V |
| Surface temperature | 3,130 K |
| Luminosity | 3.78 × 10⁻⁵ L☉ |
| Radius | 0.0209 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 39m 13.7s |
| Declination (J2000) | −35° 29′ 51″ |
| Space velocity (relative to the Sun) | 8.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.89. Visible from the whole Southern Hemisphere and north to latitude 55° N. South of latitude 55° 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 1878. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.6 million years.
The Sun seen from there
From a planet around DENIS J2139136-352950, the Sun would look like a star of magnitude 8.12, in the direction where our sky has the constellation Leo Minor. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 106907 6.54 light-years
- HIP 106271 10.5 light-years
- Itonda 11.2 light-years
- HIP 106208 12.9 light-years
- WISEA J211807.07-321713.5 16.0 light-years
- HIP 106317 16.5 light-years
- HIP 108504 17.2 light-years
- HIP 107042 17.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.