(137108) 1999 AN10

Kilometer-length near-Earth asteroid and potentially hazardous asteroid April 2018 yes #FFC2E0 (137108) 1999 AN 10 LINEAR 13 January 1999 (137108) 1999 AN 10 NEO Apollo PHA 13 September 2023(JD 2453300.5) 66.97 yr 0 26 January 1955 2.28 AU e6km unit on 0.638 AU e6km unit 5 December 2023 1.46 AU e6km unit 0.56224 1.76 yr (643.37 d) 39.929° 314.35° 0.55951 ms / day (n) 268.33° 313.20° 0.00015 AU km on 800–1800 m 5.041 hours ~2.9e12 kg ~2.8 km/h 18.1 (137108) 1999 AN 10 is a kilometer-sized near-Earth asteroid and potentially hazardous asteroid of the Apollo group. It was discovered by LINEAR on 13 January 1999. On 7 August 2027, this asteroid will pass at about 0.00261 AU km mi LD on on of the Earth's center. During the close approach, it is expected to peak at about apparent magnitude 7.3, and will be visible in binoculars. 1999 AN 10 has a well-determined orbit with an observation arc of 65 years. It was found by Andreas Doppler and Arno Gnädig in precovery images from 1955. When astronomers had an observation arc of the object of 123 days, computations gave a 1 in 10 million chance it would return on an impact trajectory in 2039. On 7 August 1946, the asteroid passed 0.00625 AU km mi on on from Earth and then 0.00404 AU km mi on off from the Moon. +1999 AN 10Position uncertainty and increasing divergence Date JPL SBDBnominal geocentricdistance (AU) uncertaintyregion(3-sigma)1946-08-07 0.006250 AU e3km unit ±900 km2027-08-07 0.002606 AU e3km unit ±160 km2076-02-04 0.027021 AU e6km unit ±154 thousand km2198-02-01 0.063727 AU e6km unit ±800 thousand km +2027 Moon/Earth approach Date & Time Approachto Nominal distance2027-Aug-07 06:48 Moon 763391 km2027-Aug-07 07:11 Earth 389866 km thumb|center|400px|Animation of 1999 AN 10's orbit Close approach in 2027 yellow Sun RoyalBlue Earth Magenta 1999 AN 10 See also Asteroid impact prediction Earth-grazing fireball List of asteroid close approaches to Earth References JPL Small-Body Database Browser: 137108 (1999 AN10) https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=1999AN10&view=OPC 20 September 2023 137108 1999 AN10 The Near-Earth Asteroids Data Base at E.A.R.N http://earn.dlr.de/nea/137108.htm 2008-01-31 https://web.archive.org/web/20120224231108/http://earn.dlr.de/nea/137108.htm 24 February 2012 dead Asteroid Size Estimator CNEOS NASA/JPL https://cneos.jpl.nasa.gov/tools/ast_size_est.html 20 April 2018 assume radius of 0.650 km; volume of a sphere * assume density of 2.6g/cm3 (though it could be a loose rubble pile) yields a mass of 2.99e12 kg and an escape velocity of 2.82 km/h. Hannu Karttunen Vilppu Piirola Astrophysics with the NOT: Proceedings of the conference held in Turku on August 12–15, 1998 University of Turku 1999 270 951-29-1615-0 Sormano Astronomical Observatory: Table of Next Closest Approaches to the Earth by Asteroids Astronomical Observatory of Brera Piero Sicoli Francesco Manca http://www.brera.mi.astro.it/sormano/teca.html 2008-01-31 https://web.archive.org/web/20071201202009/http://www.brera.mi.astro.it/sormano/teca.html 1 December 2007 live NEODys (137108) 1999AN10 Department of Mathematics, University of Pisa, ITALY http://newton.dm.unipi.it/neodys/index.php?pc=1.1.8&n=1999AN10 2008-01-31 https://web.archive.org/web/20141206001540/http://newton.dm.unipi.it/neodys/index.php?pc=1.1.8&n=1999AN10 2014-12-06 live 1999-07-12 MPEC 1999-N21: 1999 AN10 IAU: Minor Planet Center http://cfa-www.harvard.edu/mpec/J99/J99N21.html 2008-01-31 1999AN10 Ephemerides for 7 Aug 2027 NEODyS (Near Earth Objects Dynamic Site) http://newton.spacedys.com/neodys/index.php?pc=1.1.3.1&n=137108&oc=500&y0=2027&m0=08&d0=06&h0=0&mi0=0&y1=2027&m1=08&d1=08&h1=0&mi1=0&ti=1.0&tiu=hours 2011-10-16 The Continuing Story Of Asteroid 1999 AN10 Paul W. Chodas http://neo.jpl.nasa.gov/news/news017.html 1999-05-18 2010-10-22 https://web.archive.org/web/20101026082452/http://neo.jpl.nasa.gov/news/news017.html 26 October 2010 dead External links 137108 137108 1999 AN10 137108 137108 (137108) 1999 AN 10 Astronomy Stars Spaceflight Outer space Solar System 137108 137108 137108 19990113