Star · M1V
K2-317
K2-317 is a main-sequence star of spectral type M1V in the constellation Libra, 575.0 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Libra |
|---|---|
| Distance | 575.0 light-years (176.3 pc) |
| Apparent magnitude | magnitude 17.74 |
| Absolute magnitude | magnitude 11.51 |
| Spectral type | M1V |
| Surface temperature | 3,390 K |
| Luminosity | 0.0135 L☉ |
| Radius | 0.379 R☉ |
| Mass | 0.403 M☉ |
| Right ascension (J2000) | 15h 14m 28.5s |
| Declination (J2000) | −21° 01′ 22″ |
| Space velocity (relative to the Sun) | 50.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 17.74. Visible from the whole Southern Hemisphere and north to latitude 69° N. South of latitude 69° S it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1451. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 10 million years.
The Sun seen from there
From a planet around K2-317, the Sun would look like a star of magnitude 11.06, in the direction where our sky has the constellation Aries. It would be invisible to the naked eye.
Planets
- K2-317 b 6.22-day orbit · 2.93 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.