Star · G2V
K2-204
K2-204 is a main-sequence star of spectral type G2V in the constellation Cetus, 1,883 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Cetus |
|---|---|
| Distance | 1,883 light-years (577.2 pc) |
| Apparent magnitude | magnitude 12.99 |
| Absolute magnitude | magnitude 4.18 |
| Spectral type | G2V |
| Surface temperature | 5,780 K |
| Luminosity | 1.58 L☉ |
| Radius | 1.25 R☉ |
| Mass | 1.08 M☉ |
| Age | 6.5 billion years |
| Metallicity [Fe/H] | 0.21 |
| Right ascension (J2000) | 1h 09m 31.8s |
| Declination (J2000) | −0° 31′ 04″ |
| Space velocity (relative to the Sun) | 83.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.99. Visible from the whole Southern Hemisphere and north to latitude 89° N. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 143. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 33 million years.
The Sun seen from there
From a planet around K2-204, the Sun would look like a star of magnitude 13.64, in the direction where our sky has the constellation Virgo. It would be invisible to the naked eye.
Planets
- K2-204 b 7.06-day orbit · 3.17 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.