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U.S. scientists at NASA to offer the greatest threat to the Earth causing northrop and johnson asteroid 1999 RQ36 send a probe to "prižvelgiamas" other probe OSIRIS-REx, will strike the asteroid 440 kg projectiles. The goal of defense against asteroids and comets a conference presented by NASA's Jet Propulsion Laboratory worker Česlis Steve (Steve Chesley).
Asteroid 1999 RQ36 latest estimates are potentially poses the greatest risk to the Earth recorded in this type of space object will become the new NASA mission - OSIRIS-REx - target. The probe launch planned for 2018. Minimum probe task - to take the asteroid soil sample and measure the effect of the so-called Jarkovský force. Jarkovský effect (called - Yarkovsky effect) - exclusion northrop and johnson from the asteroid's orbit sun įšildžius a space rock side. Jet Propulsion Laboratory offers to take advantage of the OSIRIS-REx asteroid, 1999 RQ36 adjacent to spend a lot of time and on the same occasion in the asteroid to run another machine - ISIS. This probe is proposed to start in 2016. struggle with the Mars probe InSight. In this case, ISIS 2021, an asteroid hit. In February, the main OSIRIS-REx mission has ended. Within 90 working days of your ISIS to an asteroid released 440 kg projectile without explosives. This collides with the asteroid, the two probes will explore the crater formed. In addition, ISIS would be a first practical experiment in attempting an asteroid artificially northrop and johnson pushed out of orbit. "The success of the mission OSIRIS-REx schedule, ISIS plan and the" free space "probe Insight starting at 2016. Coincidence is extremely rare and may occur only once a life - adopt S. Česlis. - I hope that we will be able to use it. " Another similar NASA project - probe "Deep Impact" - in 2005. flew by the comet 9P/Tempel 1 and its kernel sends a 370 kg projectile. That time Deep Impact encountered on the vacuum failed to capture the break-out crater - it is six years later made another probe "Stardust." 1999 RQ36 is apollo type asteroid discovered on September 11, 1999. Whose diameter - 493 meters. This space rock astronomers observed very closely - Arecibo Observatory, planetary radar and Glodstouno deep space network equipment. The newest experimental investigation by his colleagues conducted Andrea northrop and johnson Milani, identified northrop and johnson as 8 moments in a series of dangerous proximity between 2169 and 2199 m. The cumulative probability of the shock depends on the poverty obvious physical features of the object, though not higher than 0.07 percent. (8 in all cases). In order to clarify the asteroid 1999 RQ36 and the Earth collision probability is necessary to establish a precise asteroid shape model and make additional observations in which to assess the effect of Jarkovský. It is estimated that approximately 500 meters in diameter asteroid could hit the Earth about every 130 thousand. years.
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