Pi-planet discovered with an orbital period of 3.14 days

Pi-planet discovered with an orbital period of 3.14 days
Pi-planet discovered with an orbital period of 3.14 days

American astronomers, together with colleagues from other countries, discovered in the Southern Hemisphere an exoplanet the size of the Earth, which orbits its star every 3, 14 days.


The research is published in the Astronomical Journal. The signals from the planet, which was named K2-315b, were received back in 2017, but they were refined and analyzed only now using the SPECULOOS project - a number of telescopes located in the Atacama Desert in Chile and on the island of Tenerife, engaged in observations of the southern hemisphere of the sky.

The project is dedicated to the search for habitable planets similar to the Earth and orbiting supercold stars. The study was conducted by scientists from the Massachusetts University of Technology in the United States together with colleagues from other countries, discovering the planet using a combination of astronomical and mathematical methods.

Astronomers estimate that the exoplanet has a radius of 0.95 times that of Earth and orbits a cool star about one-fifth the size of the Sun (dwarf star EPIC 249631677). K2-315b moves at a speed of 81 kilometers per second and manages to complete a revolution around the star in exactly 3.14 days.

The mass of the exoplanet has not yet been determined, but scientists suggest that it is close to Earth. Despite the fact that it looks like Earth, life on it, according to the authors of the study, is hardly possible: due to its proximity to the star, its surface temperature should reach 450 Kelvin, or plus 176.8 degrees Celsius (approximately this is needed for making pizza).

Scientists believe the pi-planet could be a promising candidate for observation with the James Webb Space Telescope. After all, exoplanets orbiting supercold dwarfs represent the best opportunity to study the atmosphere of terrestrial planets.

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