Star · M1.0 V
K2-117
K2-117 is a main-sequence star of spectral type M1.0 V in the constellation Cancer, 331.5 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Constellation | Cancer |
|---|---|
| Distance | 331.5 light-years (101.6 pc) |
| Apparent magnitude | magnitude 14.64 |
| Absolute magnitude | magnitude 9.60 |
| Spectral type | M1.0 V |
| Surface temperature | 3,780 K |
| Luminosity | 0.044 L☉ |
| Radius | 0.51 R☉ |
| Mass | 0.54 M☉ |
| Metallicity [Fe/H] | -0.05 |
| Right ascension (J2000) | 8h 55m 25.4s |
| Declination (J2000) | +10° 28′ 09″ |
| Space velocity (relative to the Sun) | 10.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.64. Visible from the whole Northern Hemisphere and south to latitude 80° S. North of latitude 80° N it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1695. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.9 million years.
The Sun seen from there
From a planet around K2-117, the Sun would look like a star of magnitude 9.87, in the direction where our sky has the constellation Aquarius. It would be invisible to the naked eye.
Planets
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.