Minor Planet Radar Database
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(2011 WS74)
Classification: ATE [NEO]
H:23.9 mag, G:0.15

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

Radar-Based Physical Properties
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Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO227507 (heliocentric ecliptic J2000)
Element Value Units
e 0.3533847
a 0.9772639 AU
i 13.68806 deg
om 67.51593 deg
w 118.29452 deg
ma 179.22683 deg
n 1.02020229 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
2010-03-08 19:23:00 0.40139 400.6 0.0
2010-11-16 02:51:00 0.25961 259.1 0.0
2011-12-04 01:52:00 0.02905 29.0 59.6
2012-11-25 13:15:00 0.23502 234.6 0.0
2013-11-15 05:59:00 0.48723 486.3 0.0

Link to complete Close-Approach Data on SBDB at JPL