Minor Planet Radar Database
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363505 (2003 UC20)
Classification: ATE [NEO, PHA]
H:18.1 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2003 Oct Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
                 [edit]
name symbol value units uncertainty reference notes
morphology
number of components N
morphological type
spectrum-based or image-based dimensions
maximum range extent Rmax km
minimum range extent Rmin km
maximum Doppler bandwidth Bmax Hz
minimum Doppler bandwidth Bmin Hz
effective diameter Deff km
quality code for size Q
shape-based dimensions
equivalent diameter Dequ km
extent along principal axis x Ex km
extent along principal axis y Ey km
extent along principal axis z Ez km
DEEVE extent along x Dx km
DEEVE extent along y Dy km
DEEVE extent along z Dz km
surface area A km2
volume V km3
spin
spin period Pspin h
spin rate ω deg/day
YORP acceleration ω̇ deg/day2
spin axis ecliptic longitude λ deg
spin axis ecliptic latitude β deg
reflectivity
radar cross-section OC σOC km2
radar cross-section SC σSC km2
radar cross-section σT km2
projected area Aproj km2
radar albedo OC σ̂OC
radar albedo SC σ̂SC
radar albedo σ̂T
circular polarization ratio μC 0.21 0.03 2008Icar..198..294B Date: 2003T

Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO427825 (heliocentric ecliptic J2000)
Element Value Units
e 0.336854
a 0.7812255 AU
i 3.80418 deg
om 188.40626 deg
w 59.69572 deg
ma 291.9181 deg
n 1.42737945 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
2010-07-07 07:55:00 0.47163 470.7 0.7
2010-12-22 17:50:00 0.43012 429.3 0.9
2012-09-06 05:49:00 0.32339 322.7 2.5
2012-12-29 19:27:00 0.06593 65.8 629.3
2014-10-31 07:44:00 0.13475 134.5 52.6
2015-03-23 03:27:00 0.38823 387.5 1.3
2017-05-10 10:30:00 0.48552 484.6 0.6
2019-06-22 20:48:00 0.48927 488.3 0.6
2021-08-10 18:24:00 0.39587 395.1 1.2
2022-01-01 01:25:00 0.15770 157.4 30.4
2023-11-02 15:49:00 0.03511 35.0 5500.4
2024-02-26 16:14:00 0.31868 318.0 2.6
2025-11-09 00:17:00 0.41089 410.1 1.1
2026-04-26 01:24:00 0.46595 465.0 0.7
2028-06-07 21:48:00 0.49708 496.1 0.6

Link to complete Close-Approach Data on SBDB at JPL