Small-Body Radar Database

363116 (2001 GQ2)
Classification: APO [NEO, PHA]
H:20.1 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2001 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 0.27 0.06 2008Icar..198..294B Date: 2001T

Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO408573 (heliocentric ecliptic J2000)
Element Value Units
e 0.5030368
a 1.2143946 AU
i 21.8217 deg
om 37.14021 deg
w 280.27959 deg
ma 120.25077 deg
n 0.73648574 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
2013-05-07 04:28:00 0.24860 248.1 0.5
2017-05-10 13:21:00 0.33911 338.4 0.2
2021-05-06 10:02:00 0.43052 429.7 0.1
2021-06-14 19:23:00 0.42448 423.6 0.1
2025-07-04 12:27:00 0.47087 469.9 0.1
2029-07-19 00:25:00 0.49588 494.9 0.0

Link to complete Close-Approach Data on SBDB at JPL