Minor Planet Radar Database
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101 Helena
Classification:  []
H:8.33 mag, G:0.35

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2001 Oct Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
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Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO467604 (heliocentric ecliptic J2000)
Element Value Units
e 0.140233
a 2.5838009 AU
i 10.19447 deg
om 343.38972 deg
w 348.35285 deg
ma 113.28287 deg
n 0.23730971 deg/d

Link to complete orbital information at Minor Planet Center