Big asteroid to pass safely by Earth on Sep 1: NASA

Big asteroid to pass safely by Earth on Sep 1: NASA thumbnail
WASHINGTON: A large near-Earth asteroid will pass safely by our planet on September 1, at a distance of seven million kilometres, or about 18 Earth-Moon distances, according to NASA.

Asteroid Florence is among the largest near-Earth asteroids that are several miles is size. Measurements from NASA’s Spitzer Space Telescope and NEOWISE mission indicate it is about 4.4 kilometres in size.

“While many known asteroids have passed by closer to Earth than Florence will on September 1, all of those were estimated to be smaller,” said Paul Chodas, manager of NASA’s Center for Near-Earth Object Studies (CNEOS).

“Florence is the largest asteroid to pass by our planet this close since the NASA programme to detect and track near-Earth asteroids began,” Chodas said.

This relatively close encounter provides an opportunity for scientists to study this asteroid up close. Florence is expected to be an excellent target for ground-based radar observations, NASA said.

The resulting radar images will show the real size of Florence and also could reveal surface details as small as about 10 metres.



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