Star · M4V
2MASS J03421621-6817321
2MASS J03421621-6817321 is a main-sequence star of spectral type M4V in the constellation Hydrus, 123.9 light-years from the Sun.
| Constellation | Hydrus |
|---|---|
| Distance | 123.9 light-years (38.0 pc) |
| Apparent magnitude | magnitude 22.35 |
| Absolute magnitude | magnitude 19.45 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.60 × 10⁻⁵ L☉ |
| Radius | 0.0192 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 3h 42m 16.2s |
| Declination (J2000) | −68° 17′ 32″ |
| Space velocity (relative to the Sun) | 11.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.35. Visible from the whole Southern Hemisphere and north to latitude 22° N. South of latitude 22° 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 1902. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.2 million years.
The Sun seen from there
From a planet around 2MASS J03421621-6817321, the Sun would look like a star of magnitude 7.73, in the direction where our sky has the constellation Draco. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.