Minor Planet Radar Database
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4581 Asclepius (1989 FC)
Classification: APO [NEO, PHA]
H:20.7 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 Aug Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
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Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO448959 (heliocentric ecliptic J2000)
Element Value Units
e 0.35713
a 1.022186 AU
i 4.91904 deg
om 180.23714 deg
w 255.24716 deg
ma 105.91857 deg
n 0.95369425 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
2011-08-07 16:11:00 0.30539 304.8 0.1
2012-08-16 08:46:00 0.10788 107.7 5.7
2013-08-25 15:00:00 0.11882 118.6 4.1
2014-07-22 12:27:00 0.28595 285.4 0.2
2014-10-17 11:17:00 0.27325 272.7 0.2
2015-06-27 11:00:00 0.36231 361.6 0.1
2015-11-19 12:21:00 0.32645 325.8 0.1
2016-06-06 10:25:00 0.38544 384.7 0.1
2016-12-17 11:19:00 0.33118 330.5 0.1
2017-05-17 20:36:00 0.36440 363.7 0.1
2018-01-18 08:05:00 0.28900 288.4 0.2
2018-04-24 20:57:00 0.29302 292.4 0.2
2019-03-22 09:01:00 0.13810 137.8 2.4
2020-03-25 14:45:00 0.07047 70.3 25.0
2021-04-03 22:10:00 0.28096 280.4 0.2
2022-04-13 14:29:00 0.48649 485.5 0.0

Link to complete Close-Approach Data on SBDB at JPL