In October 2020, OSIRIS-REx successfully touched down on the surface of Bennu, collected a sample using an extendable arm, secured the sample and prepared for a return trip to Earth. Analysis of the orbits allowed calculation of Bennu's mass and its distribution. It orbited the asteroid and mapped out Bennu's surface in detail, seeking potential sample collection sites. On 3 December 2018, the OSIRIS-REx spacecraft arrived at Bennu after a two-year journey. īennu was the target of the OSIRIS-REx mission which is intended to return its samples to Earth in 2023 for further study. It is named after the Bennu, the ancient Egyptian mythological bird associated with the Sun, creation, and rebirth.ġ01955 Bennu has a mean diameter of 490 m (1,610 ft 0.30 mi) and has been observed extensively by the Arecibo Observatory planetary radar and the Goldstone Deep Space Network. It has a cumulative 1-in-1,800 chance of impacting Earth between 21 with the greatest risk being on 24 September 2182. It is a potentially hazardous object that is listed on the Sentry Risk Table and tied for the highest cumulative rating on the Palermo Technical Impact Hazard Scale. 101955 Bennu (provisional designation 1999 RQ 36) is a carbonaceous asteroid in the Apollo group discovered by the LINEAR Project on 11 September 1999.
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