Friday, June 30, 2017

Happy Asteroid Day

Today is the international asteroid day. To celebrate that I'm posting a photo I took on the 15th of February 2013. It shows asteroid 2012DA14 as it passed just 27.700 km from Earth's surface. 2012DA14 is a small near-Earth object – approximately 45 meters in diameter and has an estimated mass of about 130,000 metric tons. This distance is well outside Earth's atmosphere, but it is inside the belt of satellites in geostationary orbit. The flyby of asteroid 2012DA14 is the closest ever predicted Earth approach for an object this large.

In this 5 minute exposure you can see the asteroid as the bright streak going diagonal to all the star trails.

Nikon D3S with a Nikon 300m f/2.8 lens
5 minute exposure @ f/4 and ISO 1600

Path of 2012DA14. Time in UTC.

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