Guwahati/ 18th August’2017 (Prag News Desk): A large near-Earth asteroid to pass safely by our planet on September 1. The asteroid to pass at a speed of seven million kilometers, said NASA. The asteroid Florence is named in on Florence Nightingale. Florence is marked about 4.4 kilometres in size which is measured by Spitzer Space Telescope of NASA. Manager of NASA’s Center for Near-Earth Object Studies Paul Chodas said many asteroids have passed closer to Earth but Florence is the largest asteroid to pass by our planet in September. Florence is pass closer since 1890 and will be ever be until after 2500. It will provide an opportunity for the scientist to study about the asteroid closely. Scientist has said asteroid Florence will be best target for ground-based radar observations which is discovered by Schelte “Bobby” Bus at Siding Spring Observatory in Australia.