Earth Science Photo of the Day...!!!15/11/11

Near Earth Asteroid 2005 YU55

Summary Author: John Chumack

Despite a suspect sky, with increasing clouds and moonlight, I managed to capture the Near Earth

Asteroid (NEA) 2005 YU55 on Tuesday evening, November 8, 2011 from my observatories in Yellow

Springs, Ohio. This was the closest asteroid to Earth in 35 years -- just 201,700 mi (324,605 km)

distant. I had to "ambush" it; sit ahead of the predicted track and wait until it entered my telescope’s field of view (FOV) as it was running a few minutes ahead of the Jet Propulsion’s (JPL) published ephemeris schedule. My large diameter telescope was a godsend as was the assistance of my friend, Melchor. This NEA, having a diameter of about 1,300 ft (400 m) was moving fast and out of my FOV in only a minute and a half. The little diagonal line is Near Earth Asteroid 2005 YU55 passing between the Moon and the Earth.


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