Star · F6 IV-V
WASP-18
WASP-18 is a subgiant star of spectral type F6 IV-V in the constellation Phoenix, 400.5 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 7562 |
|---|---|
| Constellation | Phoenix |
| Distance | 400.5 light-years (122.8 pc) |
| Apparent magnitude | magnitude 9.28 |
| Absolute magnitude | magnitude 3.83 |
| Spectral type | F6 IV-V |
| Surface temperature | 6,430 K |
| Luminosity | 2.68 L☉ |
| Radius | 1.32 R☉ |
| Mass | 1.29 M☉ |
| Age | 1.6 billion years |
| Metallicity [Fe/H] | 0.11 |
| Right ascension (J2000) | 1h 37m 25.0s |
| Declination (J2000) | −45° 40′ 40″ |
| Space velocity (relative to the Sun) | 19.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.28. Visible from the whole Southern Hemisphere and north to latitude 44° N. South of latitude 44° S it never sets. 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 1626. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 7.1 million years.
The Sun seen from there
From a planet around WASP-18, the Sun would look like a star of magnitude 10.28, in the direction where our sky has the constellation Canes Venatici. It would be invisible to the naked eye.
Planets
- WASP-18 b 0.941-day orbit · 13.9 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.