Minor Planet Radar Database
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(2005 HB4)
Classification: AMO [NEO]
H:24.4 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2005 May Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
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Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO221047 (heliocentric ecliptic J2000)
Element Value Units
e 0.2283179
a 1.3551698 AU
i 2.52712 deg
om 83.82271 deg
w 153.28355 deg
ma 302.0805 deg
n 0.6247604 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
2016-06-27 09:56:00 0.23143 231.0 0.0
2024-04-04 13:51:00 0.44966 448.8 0.0
2024-08-28 19:04:00 0.40820 407.4 0.0
2027-02-05 22:52:00 0.42955 428.7 0.0
2027-07-13 14:23:00 0.49499 494.0 0.0

Link to complete Close-Approach Data on SBDB at JPL