Asteroid Radar Database
  Return to list of asteroid radar detections  

(2011 UK21)
Classification: APO [NEO]
H:25.2 mag, G:0.15

  MPC page for this object   |  JPL SBDB page for this object   |  NEODyS-2 page for this object   |  ESA SSA page for this object  

History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2011 Oct Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
                 [edit]

Orbital Elements at Epoch 2021-07-05 00:00 TT from MPO210179 (heliocentric ecliptic J2000)
Element Value Units
e 0.4259415
a 1.7076467 AU
i 7.64196 deg
om 32.98354 deg
w 23.50936 deg
ma 114.81207 deg
n 0.44167931 deg/d

Link to complete orbital information at Minor Planet Center

Earth Close-Approach Data (+/- 10 years)
date nominal distance RTT SNR/run at Arecibo
2011-10-23 00:52:00 0.02855 28.5 26.1
2020-12-16 12:30:00 0.14190 141.6 0.1
2030-01-11 13:04:00 0.39831 397.5 0.0

Link to complete Close-Approach Data on SBDB at JPL