(137108) 1999 AN10

(137108) 1999 AN10
Discovery and designation
Discovered by LINEAR
Discovery date January 13, 1999
Designations
MPC designation (137108) 1999 AN10
Minor planet
category		 Apollo asteroid
Aphelion 2.278 AU (Q)
Perihelion 0.6387 AU (q)
Semi-major axis 1.458 AU (a)
Eccentricity 0.5621
Orbital period 1.76 a
Mean anomaly 196.4° (M)
Inclination 39.93°
Longitude of ascending node 314.4°
Argument of perihelion 268.2°
Dimensions 800 - 1800 m[2][3]
Mass ~2.9×1012 kg[4]
Equatorial escape velocity ~2.8 km/h[4]
Absolute magnitude (H) 17.807[1]

(137108) 1999 AN10 is an Apollo near-Earth asteroid (NEA) discovered by LINEAR on January 13, 1999.[5]

On August 7, 2027, this NEA will pass within 388,960 km (233,376 miles, 0.0026 AU; ~1 lunar distance) of the Earth.[6][7][8][9] During the close approach, the asteroid should peak at about apparent magnitude 7.3,[10] and will be visible in binoculars.

1999 AN10 has a well determined orbit. It was found by Andreas Doppler and Arno Gnädig in precovery images from 1955 and has been observed 166 times from 1955 to 2006.[1] According to researchers Andrea Milani, Steven R. Chesley and Giovanni B. Valsecchi, there is a 1 in 10 million chance that 1999 AN10 could return on an impact course in 2039.[11]

References

  1. ^ a b c "JPL Small-Body Database Browser: 137108 (1999 AN10)". http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1999AN10. Retrieved 2008-01-31. 
  2. ^ "137108 1999 AN10". The Near-Earth Asteroids Data Base at E.A.R.N. http://earn.dlr.de/nea/137108.htm. Retrieved 2008-01-31. 
  3. ^ Absolute magnitude to diameter conversion table
  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 2.99e12 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. pp. 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. http://www.brera.mi.astro.it/sormano/teca.html. Retrieved 2008-01-31. 
  7. ^ "JPL Close-Approach Data: 137108 (1999 AN10)". 2006-08-04 last obs (arc=51.5 years). http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1999AN10;cad=1#cad. Retrieved 2011-10-17. 
  8. ^ "NEODys (137108) 1999AN10". Department of Mathematics, University of Pisa, ITALY. Archived from the original on 2009-04-18. http://www.webcitation.org/query?id=1240086924762348. Retrieved 2008-01-31. 
  9. ^ "MPEC 1999-N21: 1999 AN10". IAU: Minor Planet Center. 1999 July 12, 21:23. http://cfa-www.harvard.edu/mpec/J99/J99N21.html. Retrieved 2008-01-31. 
  10. ^ "1999AN10 Ephemerides for 7 Aug 2027". NEODyS (Near Earth Objects - Dynamic Site). http://newton.dm.unipi.it/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. Retrieved 2011-10-16. 
  11. ^ Paul W. Chodas, Research Scientist, Near Earth Object Program Office, Jet Propulsion Laboratory (1999-05-18). "The Continuing Story Of Asteroid 1999 AN10". http://neo.jpl.nasa.gov/news/news017.html. Retrieved 2010-10-22. 

External links

(137107) 1999 AT6•(137108) 1999 AN10• (137109) 1999 AL11
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