Indian astronomers find exoplanet larger than gas giant Jupiter – RT World News

An astronomers at the Physical Research Laboratory (PRL) in India have found an exoplanet that is about 70% of the mass of Jupiter and about 1.4 times its size. Behemoth is 752 light-years from Earth and has an incredible orbit.

The Indian Space Research Organization unveiled a new discovery on Tuesday in a statement that the country’s PRL Advanced Radial-velocity Abu-sky Search (BEST) had measured the movements of the newly discovered exoplanet between December 2020 and March 2021.

The planet, named either HD 82139 or TOI 1789, depending on the cataloging method used, is very hot – with a surface temperature of up to 2,000 degrees Kelvin.

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India’s PRL Advanced Radial-velocity Abu-sky Search (BEST), an optical fiber-powered spectrograph, observed the exoplanet and its movements from the Abu Mountain Observatory, according to the space agency. Not only is the planet very hot, it is also one of the closest orbiting stars yet to be found.

Measurements obtained through PARAS were confirmed by a German TCES spectrograph in April and further confirmed by independent photometric observations from a 43 cm telescope of PRL, also located in Mount Abu.

The exoplanet has an unusually fast orbit – only 3.2 days. The pace shows that its distance from the host star is a tenth of the distance between Mercury and the Sun. This makes the exoplanet one of the less than 10 solar systems found so far. Because the new planet is close to its host star – an aging sphere with a mass of 1.5 times the mass of the Sun – the new planet is also one of the fewest planets ever found.

Planets so close to their host stars, less than 0.1 AU apart, with a mass of 0.25 to several times the mass of Jupiter, are known as “Hot Jupiters.”

The Indian Space Agency saw the discovery of a new planet as an opportunity “improve our understanding of the various mechanisms responsible for inflation in hot Jupiter and the formation and evolution of planetary systems around evolving and aging stars.” It is the second planet found by the BEST, and the previous discovery took place in 2018.

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