Minor Planet Radar Database
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(2011 TB4)
Classification: APO [NEO]
H:25.4 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2014 Oct Goldstone Goldstone 8560 [G]

Radar-Based Physical Properties
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Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO315266 (heliocentric ecliptic J2000)
Element Value Units
e 0.4558342
a 1.3068838 AU
i 6.72857 deg
om 11.54272 deg
w 90.87914 deg
ma 337.75579 deg
n 0.65970321 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
2011-10-10 23:38:00 0.01325 13.2 291.2
2014-10-09 21:45:00 0.01248 12.5 351.8
2017-10-06 07:47:00 0.06503 64.9 1.4
2020-10-02 05:22:00 0.13717 136.9 0.1
2023-09-28 21:43:00 0.21795 217.5 0.0
2026-09-24 21:17:00 0.29499 294.4 0.0
2029-09-20 14:41:00 0.37796 377.2 0.0

Link to complete Close-Approach Data on SBDB at JPL