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HD 209458 b - Wikipedia
HD 209458 b is an exoplanet that orbits the solar analog HD 209458 in the constellation Pegasus, some 157 light-years (48 parsecs) from the Solar System. The radius of the planet's orbit is 0.047 AU (7.0 million km; 4.4 million mi), or one-eighth the radius of Mercury's orbit (0.39 AU (36 million mi; … See more
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Spectroscopic studies first revealed the presence of a planet around HD 209458 on November 5, 1999. Astronomers had made careful photometric measurements of several stars … See moreIn 2014, a magnetic field around HD 209458 b was inferred from the way hydrogen was evaporating from the planet. It is the first (indirect) detection of a magnetic field on an exoplanet. The magnetic field is estimated to be about one tenth as strong as … See more
• Charbonneau, D. (2003). "HD 209458 and the Power of the Dark Side". In Deming, Drake; Seager, Sara (eds.). Scientific Frontiers in … See more
In August 2008, the measurement of HD 209458 b's Rossiter–McLaughlin effect and hence spin–orbit angle is −4.4 ± 1.4°.
The study in 2012, updated the spin-orbit angle to −5±7°. See more• 51 Pegasi b
• YZ Ceti another extra solar planet with evidence of magnetic fields
• HAT-P-11b another extra solar planet with evidence of magnetic fields
• Tau Boötis b another extra solar planet with evidence of … See more• "European astronomers observe first evaporating planet". Hubble Space Telescope. ESA/NASA. 2003-03-12. Archived from the original on 2008-07-07. Retrieved 2008-06-28.
• Hubble Finds Three Surprisingly Dry Exoplanets See moreWikipedia text under CC-BY-SA license HD 209458 b - NASA Science
HD 209458b - NASA Science
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