Minor Planet Radar Database
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137199 (1999 KX4)
Classification: AMO [NEO]
H:16.9 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
2013 May Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
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Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO439845 (heliocentric ecliptic J2000)
Element Value Units
e 0.2925783
a 1.4570993 AU
i 16.57086 deg
om 104.93546 deg
w 76.41379 deg
ma 171.33634 deg
n 0.56036415 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
2013-01-28 23:24:00 0.21143 211.0 6.0
2013-06-03 00:30:00 0.28422 283.7 2.1
2020-01-25 08:09:00 0.22919 228.7 4.6
2020-05-25 01:05:00 0.27613 275.6 2.4
2027-01-10 03:47:00 0.38057 379.8 0.8
2027-05-28 10:47:00 0.41132 410.5 0.6

Link to complete Close-Approach Data on SBDB at JPL