2005 NB56

Near-Earth asteroid February 2018 yes #FFC2E0 2005 NB 56 2005 NB56 http://www.minorplanetcenter.net/db_search/show_object?utf8=%E2%9C%93&object_id=2005+NB56 Minor Planet Center 9 August 2017 Mount Lemmon Survey 11 July 2005 Summerhaven, Arizona, US 2005 NB56 Apollo NEO (2005 NB56) 3283898 9 August 2017 21 November 2025 (JD 2461000.5) 0 6,808 d (18.64 yr) 2.41907 AU Gm on on 0.86615 AU Gm on 1.64261 AU Gm on 0.47270 2.11 yr (768.95 d) 6.7671° 112.109° 266.58° 114.48° 0.0154071 AU km on 170 m ~A search for a present-day candidate for the Comet P/Tunguska-1908 E. M. Drobyshevski T. Yu Galushina M. E. Drobyshevski 0903.3313 March 2009 astro-ph.EP 23.33 0.46817 ms /day 2.58553 AU Gm on 2005 NB 56 is a near-Earth asteroid of the Apollo group. In 2009, research physicist Edward Drobyshevski and colleagues have suggested that 2005 NB 56 could be a possible source of the meteoroid that caused the Tunguska event on 30 June 1908. It has been also suspected to be a dormant comet.When Comets Attack: Solving the Mystery of the Biggest Natural Explosion in Modern History, By Mark Anderson, Popular Mechanics Possible source of the Tunguska event bolide One study "suggests that a chunk of a comet caused the 5-10 megaton fireball, bouncing off the atmosphere and back into orbit around the sun." This object made a close approach to Earth when it was discovered in 2005 and will do so again in 2045.NEODyS: 2005NB56 Department of Mathematics, University of Pisa, ITALY https://newton.spacedys.com/neodys/index.php?pc=1.1.8&n=2005NB56 19 May 2009 This object had a poorly known orbit and was only observed over an observation arc of 17 days when it was discovered in 2005, not sufficient to predict its position in 1908 with sufficient accuracy. References External links # Category:Minor planet object articles (unnumbered) 20050711