101955 Bennu | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-06-22

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/101955_Bennu


00:01:39 1 Discovery and observation
00:02:20 1.1 Naming
00:03:02 2 Physical characteristics
00:05:21 2.1 Photometry and spectroscopy
00:05:46 3 Origin and evolution
00:05:56 4 Orbit
00:06:58 4.1 Possible Earth impact
00:08:52 4.2 2060 close approach
00:09:00 4.3 Long term
00:10:58 4.4 Meteor shower
00:12:48 5 OSIRIS-REx
00:14:07 5.1 Selection
00:14:32 6 Gallery
00:15:20 7 See also
00:16:33 8 References
00:16:42 9 External links



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Voice name: en-US-Wavenet-D


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SUMMARY
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101955 Bennu (provisional designation 1999 RQ36) is a carbonaceous asteroid in the Apollo group discovered by the LINEAR Project on 11 September 1999. It is a potentially hazardous object that is listed on the Sentry Risk Table with the second-highest cumulative rating on the Palermo Technical Impact Hazard Scale. It has a cumulative 1-in-2,700 chance of impacting Earth between 2175 and 2199. It is named after the Bennu, the ancient Egyptian mythological bird associated with the Sun, creation, and rebirth.
101955 Bennu has a mean diameter of approximately 492 m (1,614 ft; 0.306 mi) and has been observed extensively with the Arecibo Observatory planetary radar and the Goldstone Deep Space Network.Bennu is the target of the OSIRIS-REx mission which is intended to return samples to Earth in 2023 for further study. On 3 December 2018, the OSIRIS-REx spacecraft arrived at Bennu after a two-year journey. Before attempting to obtain a sample from the asteroid, it will map out Bennu's surface in detail and orbit the asteroid to calculate its mass. On 18 June 2019, NASA announced that OSIRIS-REx managed to get even closer and capture a shot at a distance of 0.4 miles (0.64 km) from the Bennu's surface.