Star · M2V
2MASSI J0439010-235308
2MASSI J0439010-235308 is a main-sequence star of spectral type M2V in the constellation Eridanus, 40.4 light-years from the Sun.
| Constellation | Eridanus |
|---|---|
| Distance | 40.4 light-years (12.4 pc) |
| Apparent magnitude | magnitude 21.33 |
| Absolute magnitude | magnitude 20.87 |
| Spectral type | M2V |
| Surface temperature | 3,340 K |
| Luminosity | 2.95 × 10⁻⁶ L☉ |
| Radius | 0.00512 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 4h 39m 00.9s |
| Declination (J2000) | −23° 53′ 11″ |
| Space velocity (relative to the Sun) | 11.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.33. Visible from the whole Southern Hemisphere and north to latitude 66° N. South of latitude 66° S it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1986. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 716 thousand years.
The Sun seen from there
From a planet around 2MASSI J0439010-235308, the Sun would look like a star of magnitude 5.29, in the direction where our sky has the constellation Hercules. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 3332B 4.86 light-years
- GJ 180 5.06 light-years
- GJ 3263 5.10 light-years
- 58 Eri 5.97 light-years
- WISEPA J050003.05-122343.2 8.81 light-years
- Gl 173 9.41 light-years
- 2MASSI J0523382-140302 10.3 light-years
- CWISEP J053644.82-305539.3 10.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.