Asteroid Radar Database
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143649 (2003 QQ47)
Classification: APO [NEO, PHA]
H:17.39 mag, G:0.15

  MPC page for this object   |  JPL SBDB page for this object   |  NEODyS-2 page for this object   |  ESA SSA page for this object  

History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2014 Mar 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 E2023-R01 (heliocentric ecliptic J2000)
Element Value Units
e 0.1869769
a 1.0853394 AU
i 62.10072 deg
om 0.98823 deg
w 104.95951 deg
ma 359.77025 deg
n 0.87167725 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
2021-09-23 23:04:00 0.09851 98.3 60.4
2022-03-10 18:53:00 0.33478 334.1 0.8
2023-04-05 08:57:00 0.37684 376.1 0.6
2029-09-10 10:05:00 0.47334 472.4 0.2
2030-09-30 01:30:00 0.23012 229.7 3.1
2031-03-19 05:27:00 0.08654 86.4 94.7

Link to complete Close-Approach Data on SBDB at JPL