Star · M3 V
TOI-122
TOI-122 is a main-sequence star of spectral type M3 V in the constellation Tucana, 203.0 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Tucana |
|---|---|
| Distance | 203.0 light-years (62.2 pc) |
| Apparent magnitude | magnitude 15.54 |
| Absolute magnitude | magnitude 11.57 |
| Spectral type | M3 V |
| Surface temperature | 3,400 K |
| Luminosity | 0.014 L☉ |
| Radius | 0.334 R☉ |
| Mass | 0.312 M☉ |
| Age | 2.0 billion years |
| Right ascension (J2000) | 22h 11m 47.6s |
| Declination (J2000) | −58° 56′ 46″ |
| Space velocity (relative to the Sun) | 80.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.54. Visible from the whole Southern Hemisphere and north to latitude 31° N. South of latitude 31° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1823. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.6 million years.
The Sun seen from there
From a planet around TOI-122, the Sun would look like a star of magnitude 8.80, in the direction where our sky has the constellation Ursa Major. It would be invisible to the naked eye.
Planets
- TOI-122 b 5.08-day orbit · 2.72 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 109228 2.30 light-years
- HIP 109183 4.06 light-years
- HIP 110442 8.57 light-years
- HIP 109203 10.7 light-years
- HIP 108971 14.2 light-years
- HIP 110355 17.4 light-years
- HIP 110376 18.3 light-years
- 2MASS J21481326-6323265 19.6 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.