Find a new planetary system containing 3

Scientists have discovered a new planetary system containing three "super-Earths" and a giant mass of gas orbiting a nearby star called HD 219134.

Discover new planetary system

According to the news on Sci-news, use the HARPS-N spectrometer of the telescope Italian T elescopio Nazionale Galileo at the Roque de los Muchachos observatory (Canary Islands, Spain), astronomers have distributed Three "super-earths" and a giant mass of gas revolve around a nearby star called HD 219134.

According to experts, 'super-Earth' is the concept of extraterrestrial planets , similar to and about 1 - 10 times larger than Earth. They have a rocky surface and a thin atmosphere.

HD 219134 also known as HR 8832 is a 5th-largest dwarf in the constellation Cassiopeia, 21 light-years away. This star is a bit colder than the Sun and lighter than its mass. Especially, we can observe this star with our eyes.

The HD 219134 planetary system consists of a giant outer planet and three "super-Earths " inside. A " super-Earth" named HD 219134b is about 4.5 times the mass of the Earth and 1.6 times larger. It rotates around the main star once every 3 days.

Scientists are continuing to learn about this new system of 3 'super-Earths'.(Sci-news photo)

The planet is similar in density to Earth and is the closest known planet in the present. Astronomers predict that this ultra-hot planet could have rocks and a surface melted with geological activities, including volcanoes.

" In the inner region, the planet also has a planet 2.7 times more massive than the Earth around the star HD 219134 at 6.8 days and a planet 8.7 times heavier than the Earth's orbit. 46.8 days If these two planets are coincident in a co-configuration with the third planet, HD 219134b, then this "super-three" Earth family might cross each other, " scientists said. said.

According to research team member, Professor Stéphane Udry from the University of Geneva, Switzerland, ESA's CHEOPS satellite will provide the perfect tools for future observation, helping to capture the potential migration process. of planets.

The HD 219134 system also includes a small planet type Saturn 2.1 astronomical unit. It orbits the main star with a cycle of more than 3 years. " This system is reminiscent of our solar system with the small inner planets and an external gas mass. Certainly, this new system will receive the growing interest of the astronomical community", scientists say.