Minor Planet Radar Database
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285263 (1998 QE2)
Classification: AMO [NEO, PHA]
H:17.2 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2013 May Goldstone Goldstone 8560 [G]
2013 Jun Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
name symbol value units uncertainty reference notes
number of components N 2 - binary
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

Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO427557 (heliocentric ecliptic J2000)
Element Value Units
e 0.5717178
a 2.424061 AU
i 12.86065 deg
om 250.13274 deg
w 345.68734 deg
ma 206.39278 deg
n 0.26114923 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
2013-05-31 20:59:00 0.03917 39.1 2226.7
2028-07-12 08:55:00 0.49026 489.3 0.3

Link to complete Close-Approach Data on SBDB at JPL