Star · K8V
K2-54
K2-54 is a main-sequence star of spectral type K8V in the constellation Aquarius, 570.6 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Aquarius |
|---|---|
| Distance | 570.6 light-years (175.0 pc) |
| Apparent magnitude | magnitude 14.54 |
| Absolute magnitude | magnitude 8.33 |
| Spectral type | K8V |
| Surface temperature | 3,990 K |
| Luminosity | 0.095 L☉ |
| Radius | 0.643 R☉ |
| Mass | 0.615 M☉ |
| Metallicity [Fe/H] | -0.02 |
| Right ascension (J2000) | 22h 32m 13.0s |
| Declination (J2000) | −17° 32′ 39″ |
| Space velocity (relative to the Sun) | 9.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.54. Visible from the whole Southern Hemisphere and north to latitude 72° N. South of latitude 72° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1455. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 10 million years.
The Sun seen from there
From a planet around K2-54, the Sun would look like a star of magnitude 11.04, in the direction where our sky has the constellation Leo. It would be invisible to the naked eye.
Planets
- K2-54 b 9.78-day orbit · 2.61 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.