HD 209458 b

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HD 209458 b compared with Jupiter

HD 209458 b is an exoplanet. It orbits HD 209458 in the constellation Pegasus. It is approximately 159 light years from the Solar System. A year on HD 209458 b is 3.5 Earth days. It has an estimated surface temperature of about 1,000 °C (about 1,800 °F). Its mass is 220 times that of Earth.[1]

References[change | change source]

  1. "Extrasolar planet HD 209458 b (Osiris)". exoplanets.co. Retrieved 2020-09-23.