2MASS J01225093-2439505 is 110 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this M3.5 V star; the first was found in 2013 by imaging (W. M. Keck Observatory).
Fly there in 3D2MASS J01225093-2439505 b was photographed directly: it is one of the few exoplanets seen as its own point of light rather than inferred from its star.
Where the archive gives only a period or only an orbit size, the other is worked out from Kepler’s third law with the star’s mass.
| Spectral type | M3.5 V |
| Surface temperature | 3,530 K |
| Mass | 0.4 solar masses |
| Radius | 0.36645 solar radii |
| Luminosity | 0.01905 times the Sun |
| Apparent magnitude | 14.244 |
| Age | about 0.12 billion years |
| Distance from the Sun | 110.3 light-years (33.8 parsecs) |
| Position (J2000) | RA 20.7128°, Dec -24.6646° |
| Constellation | Cetus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| 2MASS J01225093-2439505 b | 593.0 years from Kepler’s law | 52.000 AU | 11.209 R⊕ | 7786.5 M⊕ | Imaging, 2013 |
Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.