|
|
2012 DA14
|
2012 DA14
Diagram of 2012 DA14 passing Earth on 15 February 2013
Discovery
Discovered by
OAM Observatory, La Sagra (J75)
0.45-m Reflector
Discovery date
February 23, 2012
Designations
MPC designation
2012 DA14
Minor planet category
Pre-2013: Apollo NEO
Post 2013-Feb-15: Aten
Orbital characteristics
Epoch 2012-Sep-30
(Uncertainty=0)
Aphelion
1.110 AU (Q)
Perihelion
0.8935 AU (q)
Semi-major axis
1.001 AU (a)
Eccentricity
0.1081
Orbital period
366.2 days
Mean anomaly
299.9° (M)
Inclination
10.33°
Longitude of ascending node
147.2°
Argument of perihelion
270.0°
Physical characteristics
Dimensions
~50 meters (160 ft)
Rotation period
~6 hr
Spectral type
L-type
Apparent magnitude
7.2 (2013 peak)
Absolute magnitude (H)
24.1
2012 DA14 is a near-Earth asteroid with an estimated diameter of 50 meters (160 ft) and an estimated mass of 190,000 metric tons. It was discovered on February 23, 2012, by the Observatorio Astronómico de La Sagra, Granada in Spain (J75) seven days after passing 0.0174 AU (2,600,000 km; 1,620,000 mi) from Earth. Calculations show that on February 15, 2013, the distance between the asteroid and the center-point of Earth was 0.0002276 AU (34,050 km; 21,160 mi). The asteroid passed 27,700 km (17,200 mi) from the surface of Earth. This is a record close approach for a known object of this size.
Cite error: There are tags on this page, but the references will not show without a {{Reflist}} template or a tag; see the help page.
|
|
Created By:
System
|
|
|
|
|