Star · K3
WASP-91
WASP-91 is a main-sequence star of spectral type K3 in the constellation Tucana, 493.1 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Tucana |
|---|---|
| Distance | 493.1 light-years (151.2 pc) |
| Apparent magnitude | magnitude 12.07 |
| Absolute magnitude | magnitude 6.17 |
| Spectral type | K3 |
| Surface temperature | 4,920 K |
| Luminosity | 0.414 L☉ |
| Radius | 0.86 R☉ |
| Mass | 0.84 M☉ |
| Metallicity [Fe/H] | 0.19 |
| Right ascension (J2000) | 23h 51m 22.9s |
| Declination (J2000) | −70° 09′ 10″ |
| Space velocity (relative to the Sun) | 69.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.07. Visible from the whole Southern Hemisphere and north to latitude 20° N. South of latitude 20° S it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1533. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 8.7 million years.
The Sun seen from there
From a planet around WASP-91, the Sun would look like a star of magnitude 10.73, in the direction where our sky has the constellation Draco. It would be invisible to the naked eye.
Planets
- WASP-91 b 2.8-day orbit · 11.5 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.