HD 209458 b is a hot Jupiter exoplanet, sometimes informally called Osiris, orbiting the Sun-like star HD 209458 in the constellation Pegasus, about 157 light-years from the Solar System. It circles its star at just 0.047 astronomical units, one-eighth the radius of Mercury's orbit, giving it a year only 3.5 Earth-days long and an estimated surface temperature around 1,000 degrees Celsius. Its mass is about 220 times that of Earth and its volume roughly two and a half times that of Jupiter, marking it as a gas giant swollen by the intense heat of its star.
Facts
Classification
Constellation Discovery Year In the Other Atlases
In Constellation
Also in Divinity Atlas: the constellation this subject lies in.
Sources
1. Wikipedia (space and spaceflight articles)
Wikimedia Foundation
Wikidata: HD 209458 b
Wikidata Q272085, class allow-list match (w-wdresolver-0926)View the Source HD 209458 b (Wikipedia)
HD 209458 b, Wikipedia - lead section, catalogue classification
HD 209458 b is an exoplanet, specifically a hot Jupiter, that orbits the solar analog HD 209458 in the constellation Pegasus, some 157 light-years (48 parsecs) from the Solar System.
HD 209458 b, Wikipedia - lead section, constellation
HD 209458 b is an exoplanet, specifically a hot Jupiter, that orbits the solar analog HD 209458 in the constellation Pegasus, some 157 light-years (48 parsecs) from the Solar System.
In Group: Hot Jupiters, Lead sentence
HD 209458 b is an exoplanet, specifically a hot Jupiter, that orbits the solar analog HD 209458 in the constellation Pegasus, some 157 light-years (48 parsecs) from the Solar System.
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