Showing posts with label CHEOPS. Show all posts
Showing posts with label CHEOPS. Show all posts

Wednesday, August 11

Unique Exoplanet

The CHEOPS satellite accidentally spotted a rare exoplanet with no known equivalent. The satellite detected this unique exoplanet while looking for two exoplanets in a bright nearby star system.

This planet called ‘Nu2 Lupi d’ is located 50 light-years away in the constellation Lupus (Latin for Wolf), around a star called Nu2 Lupi. It is about 2.5 times the size of Earth and almost 9 times its mass.

What’s more, scientists used measurements with archival data from other observatories and numerical models to characterize the density and composition of the planet and its neighbors. 

They found that the planet has a rocky interior. It has far more water than the Earth. However, the water is not liquid; instead in the form of high-pressure ice or high-temperature steam, making the planets uninhabitable.

In 2019, Swiss astronomers announced the detection of three exoplanets around this bright, Sun-like star

The three exoplanets have masses between those of Earth and Neptune (17 times the Earth) and take 12, 28, and 107 days to circle their parent star.

Yann Alibert, professor of astrophysics at the University of Bern and co-author of the study, said, “We knew that already for the two inner planets, which led us to point CHEOPS to the system in the first place. 

However, the third planet is quite far away from the star; no one was expected to see its transit!”  READ MORE