Star · M4V
2MASS J12154432-3420591
2MASS J12154432-3420591 is a main-sequence star of spectral type M4V in the constellation Hydra, 81.5 light-years from the Sun.
| Constellation | Hydra |
|---|---|
| Distance | 81.5 light-years (25.0 pc) |
| Apparent magnitude | magnitude 23.74 |
| Absolute magnitude | magnitude 21.75 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 3.13 × 10⁻⁶ L☉ |
| Radius | 0.00666 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 12h 15m 44.3s |
| Declination (J2000) | −34° 20′ 59″ |
| Space velocity (relative to the Sun) | 48.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 23.74. Visible from the whole Southern Hemisphere and north to latitude 56° N. South of latitude 56° S it never sets. 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 1944. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.4 million years.
The Sun seen from there
From a planet around 2MASS J12154432-3420591, the Sun would look like a star of magnitude 6.82, in the direction where our sky has the constellation Andromeda. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 60370 7.89 light-years
- HIP 58880 9.27 light-years
- DENIS J1206501-393725 9.59 light-years
- PSO J180.1475-28.6160 9.73 light-years
- HIP 60310 9.79 light-years
- HIP 58170 10.3 light-years
- TOI-776 10.6 light-years
- GJ 3701 11.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.