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Further, the U.S. Congress held several hearings about planetary defense in the aftermath of Chelyabinsk, and the Obama adminstration asked Congress to double NASA's asteroid-hunting budget, to $40 million.
Fragments of Chelyabinsk (C2-C6)Pin It Fragments of Chelyabinsk (C2 - C6) analyzed in this study. Find locations are marked. C2 is an oriented meteorite; it travelled with its flat side forward. Its backside is shown. Image released Nov. 6, 2013.
Finally, last June, NASA announced that it was launching an asteroid "Grand Challenge," which would solicit ideas from industry, academia and the general public about the best ways to detect potentially hazardous asteroids and prevent them from hitting Earth.
The extra attention could help new instruments such as the privately funded Sentinel Space Telescope get off the ground. The nonprofit B612 Foundation is developing the infrared Sentinel, which it plans to launch to a Venus-like orbit in 2018. From there, the scope should be able to spot 500,000 new asteroids in less than six years of operation, officials say.
"We have the technology to deflect asteroids, but we cannot do anything about the objects we don’t know exist," B612 Foundation chairman and CEO Ed Lu, a former NASA astronaut, wrote in a blog post.
originally posted by: AnIntellectualRedneck
Nah, I think we're fine. They usually refine down the risk factors when they get more accurate readings from what I've seen. That 1 in 345 will probably be refined down to 1 in 10,000 or something pretty soon.
Due to 2009 FD's size, and its interactions with Mars and Venus, which increase its orbital uncertainty over time, it is rated −0.40 on the Palermo Scale, placing it high on the Sentry Risk Table.
In January 2011, near-Earth asteroid 2009 FD (with observations through 7 December 2010) was listed on the JPL Sentry Risk Table with a 1 in 435 chance of impacting Earth on 29 March 2185. In 2014 (with observations through 5 February 2014 creating an observation arc of 1807 days) the potential 2185 impact was ruled out. Using the 2014 observations, the Yarkovsky effect has become more significant than the position uncertainties. The Yarkovsky effect has resulted in the 2185 virtual impactor returning.