HD 209458 B
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| Radius | 96,514 km |
|---|---|
| Distance to Earth | 159 light years |
| Gravity | 9. 414 m/s² |
| Orbital period | 85 hours |
| Discovered | September 9, 1999 |
| Detection method | Radial velocity |
| Date of Reg. | |
| Date of Upd. | |
| ID | 2971080 |
About HD 209458 B
HD 209458 b, also given the nickname Osiris, is an exoplanet that orbits the solar analog HD 209458 in the constellation Pegasus, some 159 light-years from the Solar System. The radius of the planet's orbit is 7 million kilometres, about 0. 047 astronomical units, or one eighth the radius of Mercury's orbit.