Star · M3V
2MASS J01390900+8109597
2MASS J01390900+8109597 is a main-sequence star of spectral type M3V in the constellation Cepheus, 134.1 light-years from the Sun.
| Constellation | Cepheus |
|---|---|
| Distance | 134.1 light-years (41.1 pc) |
| Apparent magnitude | magnitude 21.16 |
| Absolute magnitude | magnitude 18.09 |
| Spectral type | M3V |
| Surface temperature | 3,110 K |
| Luminosity | 6.40 × 10⁻⁵ L☉ |
| Radius | 0.0275 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 1h 39m 09.0s |
| Declination (J2000) | +81° 09′ 59″ |
| Space velocity (relative to the Sun) | 5.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.16. Visible from the whole Northern Hemisphere and south to latitude 9° S. North of latitude 9° N it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1892. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.4 million years.
The Sun seen from there
From a planet around 2MASS J01390900+8109597, the Sun would look like a star of magnitude 7.90, in the direction where our sky has the constellation Chamaeleon. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 2MASS J01385967+8110079 3.89 light-years
- HIP 4041 8.67 light-years
- HIP 7338 9.09 light-years
- HIP 10778 9.30 light-years
- HIP 3006 9.90 light-years
- HIP 8525 10.6 light-years
- GJ 9035 13.1 light-years
- GJ 9843 14.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.