2010 AL30

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2010 AL30
Goldstone radar collage of asteroid 2010 AL30
Discovery date January 10, 2010
Alternative names none
Minor planet category Apollo NEO[1]
Orbital characteristics
Epoch 2455400.5 (2010-Jul-23.0)
Aphelion 1.3660
Perihelion 0.7243 AU
Semi-major axis 1.0451 AU
Eccentricity 0.3070
Orbital period 390.27 d
Average orbital speed 28.5
Mean anomaly 114.020
Inclination 3.81 °
Longitude of ascending node 113.004
Argument of perihelion 97.062
Physical characteristics
Dimensions ~30 meters (elongated)[2]
Rotation period 0.1417 d
Spectral type ?
Absolute magnitude (H) 27.2

2010 AL30 is a near-Earth asteroid that was discovered on 10 January 2010.[1]

Italian scientists Ernesto Guido and Giovanni Sostero told RIA Novosti that it had an orbital period of almost exactly one year and might be a spent rocket booster.[3] However, it was determined that it is a near-Earth asteroid.[4]

On January 13, 2010 at 1246 UT it passed Earth at 0.0008624 AU (129,010 km; 80,170 mi),[1] about 1/3 of the distance from the Earth to the Moon (or 0.33 LD).

Based an estimated diameter of 10–15 m (33–49 ft), if 2010 AL30 had entered the Earth's atmosphere, it would have created an air burst equivalent to between 50 kT and 100 kT (kilotons of TNT). The Nagasaki "Fat Man" atom bomb had a yield between 13–18 kT.[5]

It has an uncertainty parameter of 2 and has been observed by radar.[1] Radar observations show the asteroid is elongated and is about 30 meters in diameter.[2]

See also[edit]


  1. ^ a b c d e "JPL Small-Body Database Browser". Retrieved 2010-11-04. 
  2. ^ a b "First Results of the Goldstone High-Resolution Chirp Radar Imaging System: Application to Near-Earth Asteroid 2010 AL30". NASA/JPL Asteroid Radar Research. 2011-10-04. Retrieved 2012-03-21. 
  3. ^ What was that Mystery object whizzes past Earth, The Times of India, January 14, 2010
  4. ^ Small Asteroid 2010 AL30 Will Fly Past The Earth. NASA/JPL Near-Earth Object Program, January 12, 2010.
  5. ^ Near-Earth Object 2010 AL30. NASA Earth Science Picture of the Day March 06, 2010.

External links[edit]