Minor Planet Radar Database
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21374 (1997 WS22)
Classification: AMO [NEO]
H:17.4 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
2014 May Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
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Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO435898 (heliocentric ecliptic J2000)
Element Value Units
e 0.1205319
a 1.2693947 AU
i 23.98197 deg
om 59.21824 deg
w 197.19914 deg
ma 151.03986 deg
n 0.68914252 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
2014-05-21 19:00:00 0.12094 120.7 33.4
2017-11-11 11:17:00 0.41972 418.9 0.4
2024-05-21 12:50:00 0.11048 110.3 45.7
2027-11-08 13:09:00 0.42100 420.2 0.4

Link to complete Close-Approach Data on SBDB at JPL