Asteroid Radar Database
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(2013 US3)
Classification: APO [NEO, PHA]
H:21.31 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2018 Apr Goldstone Goldstone 8560 [G]

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

Orbital Elements at Epoch 2024-10-17 00:00 TT from MPO686938 (heliocentric ecliptic J2000)
Element Value Units
e 0.1850864
a 1.2019269 AU
i 12.31869 deg
om 39.54005 deg
w 134.18965 deg
ma 357.30771 deg
n 0.74797482 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
2017-12-16 10:55:00 0.23979 239.3 2.5
2018-04-29 10:29:00 0.02590 25.8 5428.0
2022-03-12 22:20:00 0.25922 258.7 1.9
2026-08-07 01:48:00 0.43850 437.6 0.3
2030-09-08 15:11:00 0.46269 461.8 0.2

Link to complete Close-Approach Data on SBDB at JPL