Star · K9V
K2-343
K2-343 is a main-sequence star of spectral type K9V in the constellation Cancer, 542.0 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Constellation | Cancer |
|---|---|
| Distance | 542.0 light-years (166.2 pc) |
| Apparent magnitude | magnitude 16.01 |
| Absolute magnitude | magnitude 9.91 |
| Spectral type | K9V |
| Surface temperature | 3,800 K |
| Luminosity | 0.0364 L☉ |
| Radius | 0.46 R☉ |
| Mass | 0.49 M☉ |
| Metallicity [Fe/H] | -0.10 |
| Right ascension (J2000) | 8h 56m 48.5s |
| Declination (J2000) | +21° 30′ 10″ |
| Space velocity (relative to the Sun) | 8.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 16.01. Visible from the whole Northern Hemisphere and south to latitude 68° S. North of latitude 68° N it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1484. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 9.6 million years.
The Sun seen from there
From a planet around K2-343, the Sun would look like a star of magnitude 10.93, 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.