Asteroid Radar Database
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363505 (2003 UC20)
Classification: ATE [NEO, PHA]
H:18.47 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 2024-03-31 00:00 TT from E2024-AG5 (heliocentric ecliptic J2000)
Element Value Units
e 0.3369512
a 0.781252 AU
i 3.77608 deg
om 187.92775 deg
w 60.15109 deg
ma 341.41404 deg
n 1.42730685 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
2014-10-31 07:44:00 0.13475 134.5 143.2
2015-03-23 03:27:00 0.38823 387.5 3.6
2017-05-10 10:30:00 0.48552 484.6 1.6
2019-06-22 20:48:00 0.48927 488.3 1.6
2021-08-10 18:24:00 0.39587 395.1 3.3
2022-01-01 01:25:00 0.15770 157.4 82.8
2023-11-02 15:49:00 0.03511 35.0 14962.8
2024-02-26 16:13:00 0.31868 318.0 7.1
2025-11-09 00:17:00 0.41089 410.1 2.9
2026-04-26 01:24:00 0.46595 465.0 1.9
2028-06-07 21:47:00 0.49708 496.1 1.5
2030-07-23 14:10:00 0.44180 440.9 2.3
2030-12-28 05:53:00 0.29184 291.3 9.7
2032-12-01 02:06:00 0.08272 82.6 780.3

Link to complete Close-Approach Data on SBDB at JPL