Star · F9
K2-12
K2-12 is a main-sequence star of spectral type F9 in the constellation Leo, 1,065 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Leo |
|---|---|
| Distance | 1,065 light-years (326.4 pc) |
| Apparent magnitude | magnitude 12.38 |
| Absolute magnitude | magnitude 4.81 |
| Spectral type | F9 |
| Surface temperature | 5,670 K |
| Luminosity | 1.18 L☉ |
| Radius | 1.12 R☉ |
| Mass | 0.965 M☉ |
| Age | 8.9 billion years |
| Metallicity [Fe/H] | 0.00 |
| Right ascension (J2000) | 11h 32m 46.1s |
| Declination (J2000) | +2° 14′ 41″ |
| Space velocity (relative to the Sun) | 91.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.38. Visible from the whole Northern Hemisphere and south to latitude 88° S. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 961. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 19 million years.
The Sun seen from there
From a planet around K2-12, the Sun would look like a star of magnitude 12.40, in the direction where our sky has the constellation Pisces. It would be invisible to the naked eye.
Planets
- K2-12 b 8.28-day orbit · 2.44 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.