Star · F9V
WASP-155
WASP-155 is a main-sequence star of spectral type F9V in the constellation Pegasus, 1,264 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Pegasus |
|---|---|
| Distance | 1,264 light-years (387.5 pc) |
| Apparent magnitude | magnitude 12.43 |
| Absolute magnitude | magnitude 4.49 |
| Spectral type | F9V |
| Surface temperature | 5,660 K |
| Luminosity | 1.38 L☉ |
| Radius | 1.24 R☉ |
| Mass | 1.09 M☉ |
| Age | 1.7 billion years |
| Metallicity [Fe/H] | 0.00 |
| Right ascension (J2000) | 23h 11m 55.1s |
| Declination (J2000) | +33° 02′ 52″ |
| Space velocity (relative to the Sun) | 66.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.43. Visible from the whole Northern Hemisphere and south to latitude 57° S. North of latitude 57° N 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 762. 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-155, the Sun would look like a star of magnitude 12.77, in the direction where our sky has the constellation Hydra. It would be invisible to the naked eye.
Planets
- WASP-155 b 3.11-day orbit · 13.5 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.