from Earth on 27 March 2081 was estimated at with an uncertainty region of ±870 million km. It was removed from the Sentry risk list on 4 November 2021 with a 57 day observation arc and a nominal approach of 2.5 AU with an uncertainty region of ±18 million km. 2022 (diameter ~70 meters) with a 3-8 day observation arc showed about a 1 in 2,000 chance of impact (18 months later) on 4 July 2023. The nominal distance from Earth on 4 July 2023 was estimated as small as with an uncertainty region of ±38 million km. It was lowered to Torino Scale 0 on 20 January 2022 with a 16 day observation arc and a nominal approach of 7.9 million km. (diameter ~160 meters) with a 22 day observation arc showed a 1 in 7,700 chance of impact on 11 July 2061. It was lowered to Torino Scale 0 with a 24 day observation arc. The nominal distance from Earth on 11 July 2061 is with an uncertainty region of ±600 thousand km. (diameter ~40 meters) with a 8 day observation arc showed a 1-in-109 chance of impact on 4 September 2068. The nominal distance from Earth on 4 September 2068 is now known to be with an uncertainty region of ±32 thousand km. (diameter ~170 meters) with a 25 day observation arc showed a 1 in 2,000 chance of impact on 2 April 2064. With a 35-day observation arc, the odds were reduced to 1:150,000. The nominal distance from Earth on 2 April 2064 is now known to be with a 3-sigma uncertainty region of about ±8 million km. 2023 (diameter ~280 meters) with a 15.2 day observation arc showed a cumulative 1 in 21,000 chance of impact on 10 January 2096. The nominal distance from Earth on 10 January 2096 was with a 3-sigma uncertainty region of about ±230 million km. It was removed from the risk table on 8 February 2023. See also Asteroid impact avoidance Impact event Palermo Technical Impact Hazard Scale References External links The Torino Impact Hazard Scale as part of the Sentry monitoring system by CNEOS at JPL from NASA Asteroid and Comet Impact Hazards: The Torino Scale from NASA's Ames Research Center in the Internet Archive Impact Risk Page from NEODyS American inventions Alert measurement systems Hazard scales Units of measurement in astronomy Planetary defense