Minor Planet Radar Database
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(2003 HM)
Classification: ATE [NEO]
H:22.2 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2003 Apr Arecibo Arecibo 2380 [A]
2014 Apr Goldstone Goldstone 8560 [G]
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 MPO293068 (heliocentric ecliptic J2000)
Element Value Units
e 0.2699208
a 0.8134534 AU
i 26.27546 deg
om 30.46678 deg
w 19.3183 deg
ma 85.26691 deg
n 1.34339901 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
2011-04-26 10:26:00 0.41248 411.7 0.0
2011-10-07 16:49:00 0.39449 393.7 0.0
2014-04-20 09:54:00 0.04284 42.8 50.3
2014-08-23 12:09:00 0.44846 447.6 0.0
2017-01-02 02:55:00 0.48085 479.9 0.0
2017-04-27 10:58:00 0.29732 296.7 0.1
2019-11-17 11:15:00 0.41997 419.1 0.0
2022-04-26 22:37:00 0.43576 434.9 0.0
2022-10-10 02:48:00 0.39254 391.8 0.0
2025-04-20 03:35:00 0.07511 75.0 7.2
2025-08-28 13:08:00 0.44192 441.0 0.0
2028-01-11 16:00:00 0.48104 480.1 0.0
2028-04-26 03:11:00 0.26095 260.4 0.1

Link to complete Close-Approach Data on SBDB at JPL