They discovered a planet five times the size of Jupiter, which lasts 16 hours a year

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28 Nov 2021 06:02 GMT

It is TOI-2109b, which records daytime temperatures above 3,200 degrees Celsius.

A group of international scientists have discovered a large planet where the years last only 16 hours due to the proximity of its star.

This is TOI-2109b, which belongs to the category of hot Jupiter or Pegasidia. Is considered 35% larger than our Jupiter According to the magazine, the gas in the solar system is about 5 times heavier than the giant The Astronomical Journal, Collects details of discoveries made in collaboration with NASA

Exoplanet is very close to its parent star. About 1.5 million miles (2.4 million km), which explains the short duration of its years. By comparison, the distance between Mercury and the Sun is 57.9 million kilometers.

Due to the proximity of the parent star, the daytime temperature of the exoplanet is estimated to be approximately 3,500 Kelvin (3,226 Celsius), making TOI-2109b.The second hottest planet ever discovered“, According to Details Statement from the Massachusetts Institute of Technology (MIT).

To meet your sun

Experts believe that the planet is in the process of “orbiting decay”, meaning that TOI-2109b orbits its parent star 10 to 750 milliseconds per year (faster than other hot Jupiters).

“In a year or two, if we are lucky, we will be able to find out how the planet approaches its star. Never We see the planet falling to its starBut give it another 10 million years, and this planet may not be there, ”said Ian Wong, one of the study’s lead authors.

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How was it discovered?

On May 13, 2020, NASA’s Transiting Exoplanet Study Satellite (TESS) in collaboration with MIT began observing the star TOI-2109. On The southern part of the constellation Hercules, For some 855 light-years from Earth. It was named the “object of interest” at the time because it could host a planet in orbit.

A team of TESS scientists analyzed the light emitted from a star to determine its presenceSeasonal decrease in starlight This may indicate that a planet is passing by, blocking a small fraction of the star’s light.

The information gathered confirmed that the star Contains an object It travels every 16 hours. Subsequent observations, using underground telescopes, showed that it was an exoplanet, now called the TOI-2109b.

NASA has shared a postcard made by its Rover Curiosity from Mars

Differences day and night

According to experts, the found pegasidium “seems to be blocked by tides”, a feature of most planets in this class. Despite the extreme heat during the day, it is not yet known How are the night conditions.

“Is the temperature there too cold or is the planet somehow transferring heat from day to night? We are trying to answer this question in the case of these ultra-hot Jupiters,” said one of the authors, Avi Schpoper. Research.

Meanwhile, the TOI-2109b is scheduled to be monitored in the near future with Hubble and James Web telescopes (not yet launched).

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