Star · F9 V
K2-237
K2-237 is a main-sequence star of spectral type F9 V in the constellation Ophiuchus, 1,027 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Ophiuchus |
|---|---|
| Distance | 1,027 light-years (315.0 pc) |
| Apparent magnitude | magnitude 11.60 |
| Absolute magnitude | magnitude 4.11 |
| Spectral type | F9 V |
| Surface temperature | 6,180 K |
| Luminosity | 2.01 L☉ |
| Radius | 1.24 R☉ |
| Mass | 1.26 M☉ |
| Age | 1.1 billion years |
| Metallicity [Fe/H] | 0.34 |
| Right ascension (J2000) | 16h 55m 04.5s |
| Declination (J2000) | −28° 42′ 38″ |
| Space velocity (relative to the Sun) | 15.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.60. Visible from the whole Southern Hemisphere and north to latitude 61° N. South of latitude 61° S it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 999. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 18 million years.
The Sun seen from there
From a planet around K2-237, the Sun would look like a star of magnitude 12.32, in the direction where our sky has the constellation Auriga. It would be invisible to the naked eye.
Planets
- K2-237 b 2.18-day orbit · 16.1 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.