Minor Planet Radar Database
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420591 (2012 HF31)
Classification: APO [NEO]
H:19.3 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
2018 Aug Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
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Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO472228 (heliocentric ecliptic J2000)
Element Value Units
e 0.4425059
a 1.5536409 AU
i 9.10724 deg
om 325.74401 deg
w 30.34837 deg
ma 118.47967 deg
n 0.50895349 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
2014-12-04 05:58:00 0.36346 362.7 0.2
2016-10-25 04:43:00 0.15835 158.0 3.9
2018-08-01 09:38:00 0.07207 71.9 60.0
2020-06-28 21:15:00 0.35145 350.8 0.2

Link to complete Close-Approach Data on SBDB at JPL