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2013 TV135
is an asteroid estimated to have a diameter of .〔 On September 16, 2013, it passed about from Earth.〔 On September 20, 2013, it came to perihelion (closest approach to the Sun).〔 The asteroid was discovered on October 12, 2013 by the Crimean Astrophysical Observatory using images dating back to October 8, 2013.〔 It was discovered by Ukrainian astronomer Gennady Borisov with a custom telescope. It was rated level 1 on the Torino Scale from October 16, 2013 until JPL solution 26 on November 3, 2013. It was removed from the JPL Sentry Risk Table on November 8, 2013 using JPL solution 32 with an observation arc of 27 days.〔
== Past Earth-impact estimates ==
On October 16, 2013, near-Earth asteroid (with a short observation arc of 7 days) was listed on the JPL Sentry Risk Table with 1 in 63,000 chance of impacting Earth on August 26, 2032.〔〔 This gave the asteroid a Torino Scale rating of 1.〔 The peak estimated threat from the asteroid occurred October 19–20, 2013 when Leonid Elenin and NEODyS estimated the odds of impact to be 0.03% (1 in 3,800).〔 On October 31, 2013, NEODyS estimated the odds of impact to be 1 in 4,330〔 and the Sentry Risk Table estimated the odds of impact to be 1 in 6,250.〔 On November 7, 2013, with a short observation arc of 25 days, the Sentry Risk Table estimated it had about a 1 in 169,492,000 chance of an Earth impact on August 26, 2032.〔 It was removed from the JPL Sentry Risk Table on November 8, 2013 using JPL solution 32 with an observation arc of 27 days.〔
, the NEODyS nominal best-fit orbit shows that will be from Earth on August 26, 2032.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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