Minor Planet Radar Database
  Return to list of asteroid radar detections  

(2011 HP)
Classification: APO [NEO]
H:22.1 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
2019 May Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
                 [edit]

Orbital Elements at Epoch 2019-04-27 00:00 TT from E2019-O75 (heliocentric ecliptic J2000)
Element Value Units
e 0.4813375
a 1.9227843 AU
i 3.74546 deg
om 229.67356 deg
w 46.06202 deg
ma 339.29566 deg
n 0.3696649 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
2011-05-30 16:12:00 0.03362 33.6 122.4
2019-05-30 10:48:00 0.03149 31.4 153.0
2027-05-17 11:48:00 0.11439 114.2 1.8

Link to complete Close-Approach Data on SBDB at JPL