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99942 Apophis (provisional designation 2004 MN 4) is a near-Earth asteroid and a potentially hazardous object, 450 metres (1,480 ft) by 170 metres (560 ft) in size, [3] that caused a brief period of concern in December 2004 when initial observations indicated a probability of 2.7% that it would hit Earth on Friday, 13 April 2029.
Roy A. Tucker (1951 – 2021) was an American astronomer best known for the co-discovery of near-Earth asteroid 99942 Apophis (formerly known as 2004 MN 4) along with David J. Tholen and Fabrizio Bernardi of the University of Hawaii. [2]
99942 Apophis: Orbiter/Regolith Disturber en route Successfully collected sample of Bennu on 20 October 2020 and returned the sample to Earth on 24 September 2023. For its extended mission called OSIRIS-APEX, the spacecraft is now en route to encounter Apophis on 8 April 2029. 13 Discovery 13 Lucy: 16 October 2021: Atlas V 401: NASA: 152830 ...
On 25 April 2022, NASA confirmed that the mission would be extended. After dropping off its sample to Earth on 24 September 2023, the mission became OSIRIS-APEX ('APophis EXplorer'). [77] As the new name suggests, its next target will be the near-Earth asteroid (and potentially hazardous object) 99942 Apophis. Apophis will make an extremely ...
Ramses, or Rapid Apophis Mission for Space Safety, is a proposed ESA mission to a near-Earth asteroid 99942 Apophis.If approved, it is expected to be launched in April 2028, to arrive at Apophis in February 2029, before its closest approach to Earth.
David Tholen and Roy Tucker, co-discovers of 99942 Apophis, are both fans of the TV series Stargate SG-1, which influenced the naming of the asteroid. The show's most persistent villain is "Apophis", an alien also named for the Egyptian god. "We considered a number of names, but 'Apophis' kept floating to the top," says Tucker.
99942 Apophis: 0.3: June 19, 2004: First asteroid to rank greater than one on the Torino Scale (it was ranked at 2, then 4; now down to 0). Previously better known by its provisional designation 2004 MN 4. 152830 Dinkinesh I Selam: 0.22: November 1, 2023: First satellite discovered to be a contact-binary (433953) 1997 XR 2: 0.23: December 4, 1997
Fabrizio Bernardi (born 1972) is an Italian astronomer and discoverer of minor planets and comets, best known for the co-discovery of the near-Earth and potentially hazardous asteroid 99942 Apophis. [2]