Minor Planet Radar Database
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308242 (2005 GO21)
Classification: ATE [NEO, PHA]
H:16.5 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 Jun Goldstone Goldstone 8560 [G]
2012 Jun Arecibo Arecibo 2380 [A]
2012 Jun Arecibo Goldstone DSS-13 2380 [A-DSS13]
2012 Jun Arecibo Very Long Baseline Array 2380 [A-VLBA]
2014 Jun Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
                 [edit]

Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO476376 (heliocentric ecliptic J2000)
Element Value Units
e 0.3400109
a 0.753192 AU
i 24.92859 deg
om 272.68935 deg
w 156.63235 deg
ma 28.81097 deg
n 1.50780634 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
2010-06-19 10:49:00 0.20955 209.1 17.4
2012-06-21 18:15:00 0.04396 43.9 3929.4
2014-02-08 18:56:00 0.45605 455.1 1.1
2014-06-18 03:35:00 0.21841 218.0 15.1
2016-01-16 15:03:00 0.45899 458.1 1.1
2016-06-10 09:10:00 0.43078 429.9 1.4
2017-12-25 13:59:00 0.47382 472.9 1.0
2019-12-05 01:51:00 0.49939 498.4 0.8
2025-06-12 02:02:00 0.38752 386.7 2.0
2027-06-20 05:52:00 0.19621 195.8 21.9
2029-06-21 23:02:00 0.04654 46.5 3229.8

Link to complete Close-Approach Data on SBDB at JPL