Asteroid Radar Database
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38071 (1999 GU3)
Classification: AMO [NEO, PHA]
H:19.57 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
1999 Apr Goldstone Goldstone 8560 [G]
2002 Apr Arecibo Arecibo 2380 [A]
2002 Apr Arecibo Green Bank Telescope 2380 [A-GBT]
2002 Apr Goldstone Goldstone 8560 [G]
2002 Apr Goldstone Green Bank Telescope 8560 [G-GBT]

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 0.36 0.07 2008Icar..198..294B Date: 1999T

Orbital Elements at Epoch 2024-03-31 00:00 TT from MPO727980 (heliocentric ecliptic J2000)
Element Value Units
e 0.5076361
a 2.089256 AU
i 12.7416 deg
om 195.49325 deg
w 8.81116 deg
ma 96.80511 deg
n 0.32637477 deg/d

Link to complete orbital information at Minor Planet Center

Earth Close-Approach Data (+/- 10 years)
RTT SNR/run at Arecibo
0.0 0.0

Link to complete Close-Approach Data on SBDB at JPL