Categories: Asteroids

Asteroid 2009 DD45 Just Buzzed by Earth

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As I’m writing this (13:40 UT) a newly-discovered asteroid, 2009 DD45, is flying past Earth at only 74,800 km (46,478.5 miles or 0.000482 AU) away. That’s only about twice the height of a typical geostationary communications satellite, and well inside the moon’s orbit. According to Spaceweather.com, the 30- to 40-meter wide space rock is similar in size to the Tunguska impactor of 1908, but this time there is no danger of a collision. At closest approach on March 2nd, (which just occurred) 2009 DD45 will speed through the constellation Virgo shining as brightly as an 11th magnitude star. So if you’re in the Pacific region like Hawaii or Tahiti, go out and take a look! But this rock is moving fairly fast, and by tonight, it will only be 13th magnitude, and fading fast.
UPDATE: Below see video of 2009 DD45 as seen from Australia:

(thanks to Aaron Slack for the heads up on the video)

The asteroid was only discovered three days ago by the prolific asteroid hunter Robert McNaught at Siding Spring Observatory in Australia, when the space rock was already within 2,414,016 km (1½ million miles) of Earth and closing fast. If you want to try and track it, here’s the ephemeris information from the Minor Planet Center.

The MPC also has an interesting list of the closest approaches to Earth by other minor planets.

Sources: Spaceweather.com, Sky and Telescope

Nancy Atkinson

Nancy has been with Universe Today since 2004, and has published over 6,000 articles on space exploration, astronomy, science and technology. She is the author of two books: "Eight Years to the Moon: the History of the Apollo Missions," (2019) which shares the stories of 60 engineers and scientists who worked behind the scenes to make landing on the Moon possible; and "Incredible Stories from Space: A Behind-the-Scenes Look at the Missions Changing Our View of the Cosmos" (2016) tells the stories of those who work on NASA's robotic missions to explore the Solar System and beyond. Follow Nancy on Twitter at https://twitter.com/Nancy_A and and Instagram at and https://www.instagram.com/nancyatkinson_ut/

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