Star · G0V
K2-188
K2-188 is a main-sequence star of spectral type G0V in the constellation Cancer, 1,457 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Constellation | Cancer |
|---|---|
| Distance | 1,457 light-years (446.8 pc) |
| Apparent magnitude | magnitude 12.66 |
| Absolute magnitude | magnitude 4.41 |
| Spectral type | G0V |
| Surface temperature | 5,980 K |
| Luminosity | 1.63 L☉ |
| Radius | 1.19 R☉ |
| Mass | 1.06 M☉ |
| Metallicity [Fe/H] | -0.01 |
| Right ascension (J2000) | 8h 39m 15.3s |
| Declination (J2000) | +23° 21′ 27″ |
| Space velocity (relative to the Sun) | 35.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.66. Visible from the whole Northern Hemisphere and south to latitude 67° S. North of latitude 67° N it never sets. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 569. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 26 million years.
The Sun seen from there
From a planet around K2-188, the Sun would look like a star of magnitude 13.08, in the direction where our sky has the constellation Capricornus. 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.