Minor Planet Radar Database
  Return to list of asteroid radar detections  

(1998 SD9)
Classification: ATE [NEO]
H:24 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
2018 Aug Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
                 [edit]

Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO450838 (heliocentric ecliptic J2000)
Element Value Units
e 0.5039422
a 0.703011 AU
i 3.02743 deg
om 166.32982 deg
w 7.05273 deg
ma 177.00108 deg
n 1.67209493 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
2011-06-23 07:48:00 0.46019 459.3 0.0
2011-10-09 17:57:00 0.07250 72.4 2.4
2014-10-02 01:04:00 0.37211 371.4 0.0
2015-08-30 10:27:00 0.28919 288.6 0.0
2018-08-29 07:29:00 0.01083 10.8 1421.2
2021-10-06 19:53:00 0.02718 27.1 69.9
2024-10-04 07:14:00 0.30624 305.6 0.0
2025-09-01 12:54:00 0.35547 354.8 0.0
2028-08-25 23:42:00 0.06009 60.0 4.6
2028-12-13 15:39:00 0.45301 452.1 0.0

Link to complete Close-Approach Data on SBDB at JPL