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(137108) 1999 AN10

(137108) 1999 AN10 is a kilometer-length near-Earth asteroid and potentially hazardous asteroid of the Apollo group. It was discovered by LINEAR on 13 January 1999.[5]

On 7 August 2027, this asteroid will pass at about 0.00261 AU (390,000 km; 243,000 mi; 1.02 LD) of the Earth's center.[6][1][7][8] During the close approach, it is expected to peak at about apparent magnitude 7.3,[9] and will be visible in binoculars.

1999 AN10 has a well-determined orbit with an observation arc of 65 years.[1] It was found by Andreas Doppler and Arno Gnädig in precovery images from 1955.[1] 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.[10]

On 7 August 1946, the asteroid passed 0.00625 AU (935,000 km; 581,000 mi) from Earth and then 0.00404 AU (604,000 km; 376,000 mi) from the Moon.[1]

Animation of 1999 AN10's orbit – Close approach in 2027
   Sun ·    Earth ·    1999 AN10

See also

History of close approaches of large near-Earth objects since 1908 (A)
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  • e

References

  1. ^ a b c d e f g h i "JPL Small-Body Database Browser: 137108 (1999 AN10)". Retrieved 20 September 2023.
  2. ^ "137108 1999 AN10". The Near-Earth Asteroids Data Base at E.A.R.N. Archived from the original on 24 February 2012. Retrieved 31 January 2008.
  3. ^ "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 20 April 2018.
  4. ^ a b 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 2.99×1012 kg and an escape velocity of 2.82 km/h.
  5. ^ Hannu, Karttunen; Vilppu, Piirola (1999). Astrophysics with the NOT: Proceedings of the conference held in Turku on August 12–15, 1998. University of Turku. p. 270. ISBN 951-29-1615-0.
  6. ^ Piero Sicoli; Francesco Manca. "Sormano Astronomical Observatory: Table of Next Closest Approaches to the Earth by Asteroids". Astronomical Observatory of Brera. Archived from the original on 1 December 2007. Retrieved 31 January 2008.
  7. ^ "NEODys (137108) 1999AN10". Department of Mathematics, University of Pisa, ITALY. Archived from the original on 6 December 2014. Retrieved 31 January 2008.
  8. ^ "MPEC 1999-N21: 1999 AN10". IAU: Minor Planet Center. 12 July 1999. Retrieved 31 January 2008.
  9. ^ "1999AN10 Ephemerides for 7 Aug 2027". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 16 October 2011.
  10. ^ Paul W. Chodas (18 May 1999). "The Continuing Story Of Asteroid 1999 AN10". Archived from the original on 26 October 2010. Retrieved 22 October 2010.

External links