Star · F3V
WASP-31
WASP-31 is a main-sequence star of spectral type F3V in the constellation Crater, 1,266 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Crater |
|---|---|
| Distance | 1,266 light-years (388.2 pc) |
| Apparent magnitude | magnitude 11.70 |
| Absolute magnitude | magnitude 3.75 |
| Spectral type | F3V |
| Surface temperature | 6,300 K |
| Luminosity | 2.17 L☉ |
| Radius | 1.25 R☉ |
| Mass | 1.16 M☉ |
| Age | 1.0 billion years |
| Metallicity [Fe/H] | -0.20 |
| Right ascension (J2000) | 11h 17m 45.4s |
| Declination (J2000) | −19° 03′ 17″ |
| Space velocity (relative to the Sun) | 52.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.70. Visible from the whole Southern Hemisphere and north to latitude 71° N. South of latitude 71° S it never sets. 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 760. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 22 million years.
The Sun seen from there
From a planet around WASP-31, the Sun would look like a star of magnitude 12.78, in the direction where our sky has the constellation Pegasus. It would be invisible to the naked eye.
Planets
- WASP-31 b 3.41-day orbit · 17.4 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.