2014 AA

2014 AA
2014 AA imaged by the Catalina Sky Survey in January 2014. The asteroid was around one lunar distance from Earth at that time.
Discovery[1]
Discovered byRichard Kowalski
Mount Lemmon Survey (G96)
Discovery date1 January 2014
Designations
2014 AA
Orbital characteristics[2]
Epoch 1 January 2014 (JD 2456658.5)
Uncertainty parameter 9
Observation arc~70 minutes[1]
Aphelion1.4080 AU (210.63 Gm) (Q)
Perihelion0.9163 AU (137.08 Gm) (q)
1.1623 AU (173.88 Gm) (a)
Eccentricity0.2116 (e)
1.25 yr (457.26 d)
324.1460° (M)
0° 47m 14.244s / day (n)
Inclination1.4156° (i)
101.6086° (Ω)
15 February 2014 (would have been)
52.3393° (ω)
Earth MOID4.54412×10−7 AU (67.9791 km)
Jupiter MOID3.58092 AU (535.698 Gm)
Physical characteristics
Dimensions~3 meters (10 ft)
Mass~4×104 kg (assumed)
30.9[2]

2014 AA was a small Apollo near-Earth asteroid roughly 2–4 meters in diameter that struck Earth on 2 January 2014.[1] It was discovered on 1 January 2014 by Richard Kowalski at the Mount Lemmon Survey at an apparent magnitude of 19 using a 1.52-meter (60 in) reflecting telescope at Mount Lemmon Observatory.[1] 2014 AA was only observed over a short observation arc of about 70 minutes,[1] and entered Earth's atmosphere about 21 hours after discovery.[3] Nonetheless, it remains one of only a few asteroids observed before impact (see Asteroid impact prediction).[4]

  1. ^ a b c d e Cite error: The named reference MPEC2014-A02 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference jpldata was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference news182a was invoked but never defined (see the help page).
  4. ^ "Tiny Asteroid Discovered Saturday Disintegrates Hours Later Over Southern Africa". NASA/JPL. Jet Propulsion Laboratory. Retrieved 4 June 2018.