Minor Planet Radar Database
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(2018 TR4)
Classification: APO [NEO]
H:25 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2018 Oct Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
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Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO458810 (heliocentric ecliptic J2000)
Element Value Units
e 0.1599011
a 1.0812598 AU
i 19.69215 deg
om 17.35815 deg
w 77.08224 deg
ma 113.97897 deg
n 0.87661523 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
2010-04-12 13:29:00 0.23780 237.3 0.0
2018-10-11 23:26:00 0.01758 17.5 152.3
2019-04-13 16:48:00 0.24829 247.8 0.0
2020-04-09 12:35:00 0.49567 494.7 0.0
2027-10-10 22:04:00 0.04518 45.1 6.2
2028-04-16 14:13:00 0.28124 280.7 0.0
2029-04-08 10:51:00 0.44754 446.6 0.0

Link to complete Close-Approach Data on SBDB at JPL