Star · K3V
K2-42
K2-42 is a main-sequence star of spectral type K3V in the constellation Virgo, 1,295 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Virgo |
|---|---|
| Distance | 1,295 light-years (396.9 pc) |
| Apparent magnitude | magnitude 15.01 |
| Absolute magnitude | magnitude 7.02 |
| Spectral type | K3V |
| Surface temperature | 4,610 K |
| Luminosity | 0.198 L☉ |
| Radius | 0.643 R☉ |
| Mass | 0.702 M☉ |
| Right ascension (J2000) | 11h 46m 39.8s |
| Declination (J2000) | −5° 10′ 19″ |
| Space velocity (relative to the Sun) | 63.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.01. Visible from the whole Southern Hemisphere and north to latitude 85° N. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 731. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 23 million years.
The Sun seen from there
From a planet around K2-42, the Sun would look like a star of magnitude 12.82, in the direction where our sky has the constellation Pisces. It would be invisible to the naked eye.
Planets
- K2-42 b 6.69-day orbit · 2.15 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.