(458732) 2011 MD5

Apollo near-Earth asteroid September 2020 yes (458732) 2011 MD 5 #FFC2E0 Pan-STARRS 1 Haleakala Obs. 30 June 2011 (458732) 2011 MD 5 NEO Apollo 31 May 2020 (JD 2459000.5) 0 8.67 yr (3,165 d) 3.9869 AU 0.9895 AU 2.4882 AU 0.6023 3.92 yr (1,434 d) 49.188° 0.2511 ms / day 10.553° 170.34° 224.84° 0.0627 AU LD unit 730–1,600 m (CNEOS)0.8 km1.2 km 17.817.9 458732 2011 MD 5 is an Apollo near-Earth asteroid around 1.2 km off us in diameter. It is the largest asteroid known to have passed closer than the Moon. On 17 September 1918 the asteroid passed 0.00234 AU km LD from Earth with a peak apparent magnitude of around 8.4. The 1918 close approach distance is known with an accuracy of roughly ±120 km. The asteroid had come to opposition (opposite the Sun in the sky) on 9 August 1918 at magnitude 16. 2011 MD 5 was not discovered until 30 June 2011, when the asteroid was 1.3 AU e6km unit on from Earth. As of 2023, the asteroid has a 12-year observation arc and a well-determined orbit. References 2011-07-03 MPEC 2011-N15 : 2011 MD5 https://minorplanetcenter.net//mpec/K11/K11N15.html 2020-06-14 IAU Minor Planet Center (K11M05D) JPL Small-Body Database Browser: 458732 (2011 MD5) http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=458732;cad=1 live https://web.archive.org/web/20200502082614/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=458732;cad=1 2020-05-02 2020-06-14 Jet Propulsion Laboratory NEO Earth Close Approaches https://web.archive.org/web/20171019211133/https://cneos.jpl.nasa.gov/ca/ 19 October 2017 @ JPL CNEOSSelect "Nominal dist <= 1 LD", "Past only", Sort by "H (mag)" 458732 (2011 MD5) https://www.minorplanetcenter.net/db_search/show_object?object_id=458732 15 June 2020 Minor Planet Center 458732 live https://web.archive.org/web/20200615025854/http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=458732 15 June 2020 15 June 2020 Asteroid Lightcurve Database (LCDB) External links 458732 458732 2011MD5 2458732 458732 (458732) 2011 MD 5 458732 458732 20110630