Star · G1 V
WASP-22
WASP-22 is a main-sequence star of spectral type G1 V in the constellation Eridanus, 1,034 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Eridanus |
|---|---|
| Distance | 1,034 light-years (317.1 pc) |
| Apparent magnitude | magnitude 12.04 |
| Absolute magnitude | magnitude 4.53 |
| Spectral type | G1 V |
| Surface temperature | 6,000 K |
| Luminosity | 1.76 L☉ |
| Radius | 1.24 R☉ |
| Mass | 1.46 M☉ |
| Age | 3.0 billion years |
| Metallicity [Fe/H] | -0.05 |
| Right ascension (J2000) | 3h 31m 16.3s |
| Declination (J2000) | −23° 49′ 11″ |
| Space velocity (relative to the Sun) | 40.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.04. Visible from the whole Southern Hemisphere and north to latitude 66° N. South of latitude 66° S it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 992. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 18 million years.
The Sun seen from there
From a planet around WASP-22, the Sun would look like a star of magnitude 12.34, in the direction where our sky has the constellation Serpens. It would be invisible to the naked eye.
Planets
- WASP-22 b 3.53-day orbit · 13.8 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.