Star · F9V
K2-308
K2-308 is a main-sequence star of spectral type F9V in the constellation Taurus, 4,287 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Taurus |
|---|---|
| Distance | 4,287 light-years (1,315 pc) |
| Apparent magnitude | magnitude 15.07 |
| Absolute magnitude | magnitude 4.48 |
| Spectral type | F9V |
| Surface temperature | 6,100 K |
| Luminosity | 1.92 L☉ |
| Radius | 1.24 R☉ |
| Mass | 1.09 M☉ |
| Metallicity [Fe/H] | -0.10 |
| Right ascension (J2000) | 5h 13m 21.4s |
| Declination (J2000) | +16° 24′ 51″ |
| Space velocity (relative to the Sun) | 12.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.07. Visible from the whole Northern Hemisphere and south to latitude 74° S. North of latitude 74° N it never sets. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 4,287 years ago. At that time the first farming villages were being founded; there was no writing yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 76 million years.
The Sun seen from there
From a planet around K2-308, the Sun would look like a star of magnitude 15.42, in the direction where our sky has the constellation Ophiuchus. It would be invisible to the naked eye.
Planets
- K2-308 b 3.39-day orbit · 9.92 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.