2014 AA information

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
Discovered by	Richard Kowalski; Mount Lemmon Survey (G96)
Discovery date	1 January 2014
Designations
MPC designation	2014 AA
Minor planet category	Apollo; NEO;
Orbital characteristics
	Epoch 1 January 2014 (JD 2456658.5)
	Uncertainty parameter 9
Observation arc	~70 minutes
Aphelion	1.4080 AU (210.63 Gm) (Q)
Perihelion	0.9163 AU (137.08 Gm) (q)
Semi-major axis	1.1623 AU (173.88 Gm) (a)
Eccentricity	0.2116 (e)
Orbital period (sidereal)	1.25 yr (457.26 d)
Mean anomaly	324.1460° (M)
Mean motion	0° 47m 14.244s / day (n)
Inclination	1.4156° (i)
Longitude of ascending node	101.6086° (Ω)
Time of perihelion	15 February 2014 (would have been)
Argument of perihelion	52.3393° (ω)
Earth MOID	4.54412×10−7 AU (67.9791 km)
Jupiter MOID	3.58092 AU (535.698 Gm)
Physical characteristics
Dimensions	~3 meters (10 ft)
Mass	~4×104 kg (assumed)
Absolute magnitude (H)	30.9

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]

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

[MPEC2014-A02-1] Cite error: The named reference MPEC2014-A02 was invoked but never defined (see the help page).

[jpldata-2] Cite error: The named reference jpldata was invoked but never defined (see the help page).

[news182a-3] Cite error: The named reference news182a was invoked but never defined (see the help page).

[JPL-new-discovery-2018-LA-4] "Tiny Asteroid Discovered Saturday Disintegrates Hours Later Over Southern Africa". NASA/JPL. Jet Propulsion Laboratory. Retrieved 4 June 2018.

2014 AA information

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Discovery^[1]
2014 AA imaged by the Catalina Sky Survey in January 2014. The asteroid was around one lunar distance from Earth at that time.
Discovered by	Richard Kowalski Mount Lemmon Survey (G96)
Discovery date	1 January 2014
Designations
MPC designation	2014 AA
Minor planet category	Apollo NEO^[2]
Orbital characteristics^[2]
Epoch 1 January 2014 (JD 2456658.5)
Uncertainty parameter 9
Observation arc	~70 minutes^[1]
Aphelion	1.4080 AU (210.63 Gm) (Q)
Perihelion	0.9163 AU (137.08 Gm) (q)
Semi-major axis	1.1623 AU (173.88 Gm) (a)
Eccentricity	0.2116 (e)
Orbital period (sidereal)	1.25 yr (457.26 d)
Mean anomaly	324.1460° (M)
Mean motion	0° 47^m 14.244^s / day (n)
Inclination	1.4156° (i)
Longitude of ascending node	101.6086° (Ω)
Time of perihelion	15 February 2014 (would have been)
Argument of perihelion	52.3393° (ω)
Earth MOID	4.54412×10⁻⁷ AU (67.9791 km)
Jupiter MOID	3.58092 AU (535.698 Gm)
Physical characteristics
Dimensions	~3 meters (10 ft)
Mass	~4×10⁴ kg (assumed)
Absolute magnitude (H)	30.9^[2]