Exoplanet
The first exoplanet discovered orbiting a Sun-like star, a 'hot Jupiter' whose discovery launched modern exoplanet science.
| Type | Exoplanet |
|---|---|
| Orbits | 51 Pegasi |
| Distance from Earth | 50.9 ly |
| Diameter | 179,662 km |
| Mass | 1.16 × 10^27 kg |
| Temperature | 1,011°C |
| Orbital period | 4 days |
| Apparent magnitude | 5.49 |
| Hemisphere | Northern |
| Discovered | 1995 |