Asteroid Radar Database
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136993 (1998 ST49)
Classification: APO [NEO]
H:17.77 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
2012 Oct Arecibo Arecibo 2380 [A]
2012 Oct Goldstone Goldstone 8560 [G]

Radar-Based Physical Properties
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Orbital Elements at Epoch 2021-07-05 00:00 TT from MPO595052 (heliocentric ecliptic J2000)
Element Value Units
e 0.5953354
a 2.3079252 AU
i 24.48621 deg
om 18.20874 deg
w 48.07892 deg
ma 163.68756 deg
n 0.28110688 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
2012-10-18 05:39:00 0.07368 73.5 119.2
2019-10-30 06:21:00 0.20841 208.0 3.2
2026-11-08 18:41:00 0.29724 296.7 0.9

Link to complete Close-Approach Data on SBDB at JPL