Star · G7 V
K2-31
K2-31 is a main-sequence star of spectral type G7 V in the constellation Scorpius, 359.4 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Scorpius |
|---|---|
| Distance | 359.4 light-years (110.2 pc) |
| Apparent magnitude | magnitude 10.90 |
| Absolute magnitude | magnitude 5.69 |
| Spectral type | G7 V |
| Surface temperature | 5,280 K |
| Luminosity | 0.776 L☉ |
| Radius | 0.78 R☉ |
| Mass | 0.91 M☉ |
| Metallicity [Fe/H] | 0.08 |
| Right ascension (J2000) | 16h 21m 45.8s |
| Declination (J2000) | −23° 32′ 52″ |
| Space velocity (relative to the Sun) | 54.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.90. Visible from the whole Southern Hemisphere and north to latitude 66° N. South of latitude 66° 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 1667. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 6.4 million years.
The Sun seen from there
From a planet around K2-31, the Sun would look like a star of magnitude 10.04, in the direction where our sky has the constellation Taurus. It would be invisible to the naked eye.
Planets
- K2-31 b 1.26-day orbit · 11.9 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.