Star · F4
Dìwö
Dìwö is a main-sequence star of spectral type F4 in the constellation Scorpius, 1,315 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | WASP-17 |
|---|---|
| Constellation | Scorpius |
| Distance | 1,315 light-years (403.1 pc) |
| Apparent magnitude | magnitude 11.62 |
| Absolute magnitude | magnitude 3.59 |
| Spectral type | F4 |
| Surface temperature | 6,550 K |
| Luminosity | 4.1 L☉ |
| Radius | 1.49 R☉ |
| Mass | 2.28 M☉ |
| Age | 2.7 billion years |
| Metallicity [Fe/H] | -0.25 |
| Right ascension (J2000) | 15h 59m 50.9s |
| Declination (J2000) | −28° 03′ 42″ |
| Space velocity (relative to the Sun) | 54.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.62. Visible from the whole Southern Hemisphere and north to latitude 62° N. South of latitude 62° S it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 711. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 23 million years.
The Sun seen from there
From a planet around Dìwö, the Sun would look like a star of magnitude 12.86, in the direction where our sky has the constellation Taurus. It would be invisible to the naked eye.
Planets
- WASP-17 b 3.74-day orbit · 21 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.