Asteroid Radar Database
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310842 (2003 AK18)
Classification: ATE [NEO]
H:19.76 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
2011 Dec Arecibo Arecibo 2380 [A]
2011 Dec Goldstone Goldstone 8560 [G]

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 2022-01-21 00:00 TT from MPO660785 (heliocentric ecliptic J2000)
Element Value Units
e 0.3841337
a 0.8769272 AU
i 7.40344 deg
om 301.61334 deg
w 23.86105 deg
ma 184.42333 deg
n 1.20021413 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
2013-03-29 04:06:00 0.25315 252.6 0.6
2016-10-10 04:40:00 0.40681 406.0 0.1
2017-02-15 09:53:00 0.23317 232.7 0.8
2017-06-11 19:02:00 0.38044 379.7 0.1
2020-12-30 21:11:00 0.18433 184.0 1.8
2021-08-21 13:16:00 0.47328 472.3 0.1
2022-04-03 09:59:00 0.13183 131.6 5.9
2026-01-22 11:29:00 0.19731 196.9 1.4
2026-07-06 16:08:00 0.43534 434.5 0.1
2027-03-19 19:16:00 0.48875 487.8 0.1
2030-01-07 10:49:00 0.37956 378.8 0.1
2030-09-12 01:28:00 0.45870 457.8 0.1
2031-03-21 17:52:00 0.17933 179.0 2.0

Link to complete Close-Approach Data on SBDB at JPL