NASA details its anti-astrode plan

the astrode that frl us this monday has its own moon

asteroid

This Monday, an astrode passed closest to Earth, and NASA was able to observe it directly, revealing the presence of a mini-moon.

2004 BL86 passed as expected over our heads this Monday, with no incident to note on our planet. The asteroid was closest to Earth shortly after 5 p.m. (French time), and NASA was able to observe the latter with a key discovery.

2004 BL86 1 "width =" 250 "height =" 141 Astronauts were able to discover that the asteroid was not alone, and that it was evolving accompanied by its own mini moon. The main object is 500 meters wide and its mass seems sufficient for a satellite to have formed around it.

The Goldstone radar in the Mojave Desert in California offers a picture of this duo. The moon in question is said to be 70 meters wide.

It is not the first time that such satellites have been spotted around asteroids. The first observation of this type dates from 1993 and was carried out by the Galileo probe which crossed Dactyl, a 1.6 km wide moon orbiting the asteroid Ida.

NASA estimates that 16% of asteroids traveling close to Earth and exceeding 200 meters in width are equipped with a satellite, some even have several satellites.

The next passage in 2004 BL86 near Earth is not expected for 200 years.