Asteroid Radar Database
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(2020 HW3)
Classification: APO [NEO]
H:22.1 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2020 Apr 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

Orbital Elements at Epoch 2024-03-31 00:00 TT from E2020-HL1 (heliocentric ecliptic J2000)
Element Value Units
e 0.5467566
a 1.1574064 AU
i 45.81935 deg
om 213.90372 deg
w 114.70706 deg
ma 9.42729 deg
n 0.79154438 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
2015-05-01 06:09:00 0.18254 182.2 0.3
2016-11-02 10:25:00 0.30003 299.4 0.1
2020-04-24 18:29:00 0.03583 35.8 99.2
2021-10-18 18:43:00 0.37635 375.6 0.0
2025-04-17 13:02:00 0.21651 216.1 0.2
2030-04-09 09:45:00 0.41348 412.7 0.0

Link to complete Close-Approach Data on SBDB at JPL