(137108) 1999 AN10

From Wikipedia, the free encyclopedia
Jump to: navigation, search
(137108) 1999 AN10
Discovery
Discovered by LINEAR
Discovery date 7 January 1999
Designations
MPC designation (137108) 1999 AN10
NEO · Apollo
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 21222 days (58.10 yr)
Aphelion 2.2787 AU (340.89 Gm)
Perihelion 0.63875 AU (95.556 Gm)
1.4587 AU (218.22 Gm)
Eccentricity 0.56212
1.76 yr (643.51 d)
186.69°
0° 33m 33.948s / day (n)
Inclination 39.932°
314.41°
268.30°
Earth MOID 0.000708904 AU (106,050.5 km)
Physical characteristics
Dimensions 800 - 1800 m[2][3]
Mass ~2.9×1012 kg[4]
Equatorial escape velocity
~2.8 km/h[4]
17.9[1]

(137108) 1999 AN10 is an asteroid, classified as near-Earth object of the Apollo group. It was discovered by LINEAR on 13 January 1999.[5]

On 7 August 2027, this asteroid will pass within 0.0026 AU (390,000 km; 240,000 mi) (~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 with an observation arc of 58 years.[1] It was found by Andreas Doppler and Arno Gnädig in precovery images from 1955.[1] When 1999 AN10 only had an observation arc of 123 days, there was a 1 in 10 million chance that it could return on an impact trajectory in 2039.[11]

On August 7, 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.[7]

References[edit]

  1. ^ a b c d "JPL Small-Body Database Browser: 137108 (1999 AN10)". Retrieved 7 April 2016. 
  2. ^ "137108 1999 AN10". The Near-Earth Asteroids Data Base at E.A.R.N. Retrieved 2008-01-31. 
  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 2.99e12 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. 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 2008-01-31. 
  7. ^ a b "JPL Close-Approach Data: 137108 (1999 AN10)" (2006-08-04 last obs (arc=51.5 years)). Retrieved 2011-10-17. 
  8. ^ "NEODys (137108) 1999AN10". Department of Mathematics, University of Pisa, ITALY. Archived from the original on 2009-04-18. Retrieved 2008-01-31. 
  9. ^ "MPEC 1999-N21: 1999 AN10". IAU: Minor Planet Center. 1999-07-12. Retrieved 2008-01-31. 
  10. ^ "1999AN10 Ephemerides for 7 Aug 2027". NEODyS (Near Earth Objects - Dynamic Site). Retrieved 2011-10-16. 
  11. ^ Paul W. Chodas (1999-05-18). "The Continuing Story Of Asteroid 1999 AN10". Archived from the original on 26 October 2010. Retrieved 2010-10-22. 

External links[edit]