Asteroid Radar Database
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438661 (2008 EP6)
Classification: APO [NEO, PHA]
H:19.23 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2016 Jan 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 E2024-GJ9 (heliocentric ecliptic J2000)
Element Value Units
e 0.2931696
a 1.2089412 AU
i 17.72253 deg
om 303.22755 deg
w 130.28497 deg
ma 83.54055 deg
n 0.74147466 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
2015-08-03 00:42:00 0.37973 379.0 0.2
2016-01-27 02:30:00 0.05017 50.1 219.8
2019-08-07 05:26:00 0.35104 350.3 0.2
2020-01-20 10:28:00 0.09240 92.2 26.6
2023-08-12 05:09:00 0.31759 317.0 0.4
2024-01-10 23:54:00 0.15434 154.0 4.5
2027-08-17 11:36:00 0.28336 282.8 0.5
2027-12-28 19:20:00 0.21767 217.2 1.4
2031-08-22 13:29:00 0.25257 252.1 0.8
2031-12-10 01:45:00 0.27389 273.3 0.6

Link to complete Close-Approach Data on SBDB at JPL