Minor Planet Radar Database
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(2011 YH40)
Classification: APO [NEO]
H:22.9 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2012 Jan Goldstone Goldstone 8560 [G]

Radar-Based Physical Properties
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Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO237413 (heliocentric ecliptic J2000)
Element Value Units
e 0.3277827
a 1.3973789 AU
i 11.33801 deg
om 294.24544 deg
w 220.86669 deg
ma 125.9186 deg
n 0.59666809 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
2012-01-16 17:37:00 0.01377 13.7 1064.7
2012-05-10 03:30:00 0.33951 338.8 0.0
2016-12-27 17:10:00 0.28149 280.9 0.0
2017-06-12 18:09:00 0.48875 487.8 0.0

Link to complete Close-Approach Data on SBDB at JPL