Minor Planet Radar Database
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(2014 HM4)
Classification: APO [NEO]
H:26.9 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2014 Apr Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
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Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO307080 (heliocentric ecliptic J2000)
Element Value Units
e 0.5298911
a 1.0987481 AU
i 1.31473 deg
om 30.83255 deg
w 297.95296 deg
ma 72.48595 deg
n 0.85576957 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
2014-04-25 13:59:00 0.00423 4.2 0.0
2015-08-17 01:52:00 0.49544 494.4 0.0
2016-12-10 08:41:00 0.06034 60.2 0.6
2022-04-15 17:43:00 0.37531 374.6 0.0
2022-06-15 15:36:00 0.37699 376.2 0.0
2023-09-24 23:01:00 0.45457 453.7 0.0
2024-12-26 02:44:00 0.32927 328.6 0.0
2029-04-19 16:58:00 0.13884 138.6 0.0

Link to complete Close-Approach Data on SBDB at JPL