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(137108) 1999 An10

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Title: (137108) 1999 An10  
Author: World Heritage Encyclopedia
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Subject: List of Solar System objects by size, Frank B. Zoltowski, List of minor planets/137101–137200, Meteor (TV miniseries)
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(137108) 1999 An10

(137108) 1999 AN10
Discovery and designation
Discovered by LINEAR
Discovery date January 13, 1999
MPC designation (137108) 1999 AN10
Minor planet category Apollo asteroid
Orbital characteristics[1]
Epoch 2013-Apr-18
JD 2456400.5
Aphelion 2.2787 AU (Q)
Perihelion 0.63880 AU (q)
Semi-major axis 1.4587 AU (a)
Eccentricity 0.56209
Orbital period 1.76 a
Mean anomaly 347.23° (M)
Inclination 39.931°
Longitude of ascending node 314.41°
Argument of perihelion 268.32°
Physical characteristics
Dimensions 800 - 1800 m[2][3]
Mass ~2.9×1012 kg[4]
Equatorial escape velocity ~2.8 km/h[4]
Absolute magnitude (H) 17.8[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 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]


External links

  • Horizons Ephemeris
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