Star · M4V
2MASS J01392388-1845029
2MASS J01392388-1845029 is a main-sequence star of spectral type M4V in the constellation Cetus, 114.2 light-years from the Sun.
| Constellation | Cetus |
|---|---|
| Distance | 114.2 light-years (35.0 pc) |
| Apparent magnitude | magnitude 22.05 |
| Absolute magnitude | magnitude 19.33 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.91 × 10⁻⁵ L☉ |
| Radius | 0.0203 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 1h 39m 23.9s |
| Declination (J2000) | −18° 45′ 03″ |
| Space velocity (relative to the Sun) | 6.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.05. Visible from the whole Southern Hemisphere and north to latitude 71° N. South of latitude 71° S it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1912. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.0 million years.
The Sun seen from there
From a planet around 2MASS J01392388-1845029, the Sun would look like a star of magnitude 7.55, in the direction where our sky has the constellation Boötes. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 2MASS J01414839-1601196 6.37 light-years
- WISEU J013522.46-221957.3 10.0 light-years
- GJ 3111 10.4 light-years
- HIP 7396 12.1 light-years
- HIP 8881 12.2 light-years
- HIP 7228 12.7 light-years
- HIP 6455 12.8 light-years
- 47 Cet 13.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.