Today we have to talk about HD 209458. The nickname of the HD 209458 b is also given Osiris. This is an exoplanet that rotates Solar Analog HD 209458 b in stars in Pegasus, which are approximately 159 light-years from the Solar System. So let's get some information about HD 209458 b.The planet's orbital radius is 7 million kilometers, which is approximately 0.047 astronomical units, or Mercury's orbital radius is the sole. The radius of this planet is 7 million kilometers, which is approximately 0.047 astronomical units or the radius of Mercury's orbit alone. HD 209458 b is 159 light years away from Earth. The high size and volume of HD 209458 b indicates that it is a gas giant. The planet represents a number of milestones in additional extraplanetary disciplines.
In July 2014, NASA announced the finding of a very dry atmosphere on the stars like the Sun at 209458 b and two other exoplanets was done. On April 10, 2007, Travis Barman of the Lowell Observatory revealed that water evaporates in the atmosphere of HD 209458b. In 2014, a magnetic field around HD 209458 b was inferred from the way hydrogen was evaporating from the planet. First on November 5, 1999, the spectroscopic study revealed the presence of the planet around HD 209458. Charbonneau's team measured a 1.7% drop in HD 209458's brightness, which was attributed to the passage of the planet across the star.
This star was observed several times by the Hipparcos satellite, due to which astronomers calculated the rotation period of HD 209458 B in 3.524736 days. Spectroscopic analysis shows that the size of this planet is 0.69 times the Jupiter. On February 21, 2007, NASA and Nature published the news that HD 209458 b is one of the first extrasolar planets to see their spectra directly, while the second is HD 189733 B. NASA's Goddard Space Flight Center's Jeremy Richardson The group of researchers led by the measurement of HD 209458 B in the range of 7.5 to 13.2 micrometer. On June 23, 2010, astronomers announced that they had measured the superstorm (with wind speeds of up to 7000 km/h) for the first time in the HD 209458b atmosphere.