Asteroid Radar Database
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85182 (1991 AQ)
Classification: APO [NEO, PHA]
H:17.07 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
1991 Jan Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
name symbol value units uncertainty reference notes
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 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
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 0.22 0.03 2008Icar..198..294B Date: 1991T

Orbital Elements at Epoch 2022-01-21 00:00 TT from MPO647688 (heliocentric ecliptic J2000)
Element Value Units
e 0.7766668
a 2.2220561 AU
i 3.12263 deg
om 339.60401 deg
w 243.00476 deg
ma 121.42305 deg
n 0.29755795 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
2024-03-03 19:15:00 0.36949 368.8 0.7
2027-09-03 09:20:00 0.37090 370.2 0.7

Link to complete Close-Approach Data on SBDB at JPL