Star · G9
WASP-47
WASP-47 is a main-sequence star of spectral type G9 in the constellation Aquarius, 863.6 light-years from the Sun. It is orbited by 4 confirmed exoplanet(s).
| Constellation | Aquarius |
|---|---|
| Distance | 863.6 light-years (264.8 pc) |
| Apparent magnitude | magnitude 11.94 |
| Absolute magnitude | magnitude 4.83 |
| Spectral type | G9 |
| Surface temperature | 5,570 K |
| Luminosity | 1.08 L☉ |
| Radius | 1.16 R☉ |
| Mass | 1.06 M☉ |
| Age | 6.5 billion years |
| Metallicity [Fe/H] | 0.43 |
| Right ascension (J2000) | 22h 04m 48.7s |
| Declination (J2000) | −12° 01′ 09″ |
| Space velocity (relative to the Sun) | 55.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.94. Visible from the whole Southern Hemisphere and north to latitude 78° N. South of latitude 78° 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 1162. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 15 million years.
The Sun seen from there
From a planet around WASP-47, the Sun would look like a star of magnitude 11.94, in the direction where our sky has the constellation Leo. It would be invisible to the naked eye.
Planets
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.