Asteroid Radar Database
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163899 (2003 SD220)
Classification: ATE [NEO, PHA]
H:17.63 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
2015 Nov Goldstone Goldstone 8560 [G]
2015 Nov Arecibo Arecibo 2380 [A]
2015 Nov Arecibo Green Bank Telescope 2380 [A-GBT]
2018 Aug Arecibo Arecibo 2380 [A]
2018 Nov Goldstone Goldstone 8560 [G]
2018 Nov Goldstone Green Bank Telescope 8560 [G-GBT]
2018 Nov Goldstone Goldstone DSS-13 8560 [G-DSS13]
2018 Nov Goldstone DSS-13 Green Bank Telescope 7190 [DSS13-GBT]
2018 Nov Goldstone Sardinia Deep Space Antenna 8560 [G-SDSA]
2018 Nov Goldstone Medicina 8560 [G-ME]
2018 Nov Goldstone Badary 8560 [G-Bd]
2018 Nov Goldstone Zelenchukskaya 8560 [G-Zc]
2018 Nov Goldstone Svetloe 8560 [G-Sv]
2018 Nov Arecibo Arecibo 2380 [A]
2018 Nov Arecibo Green Bank Telescope 2380 [A-GBT]
2018 Dec Canberra DSS-43 Australian Telescope Compact Array 7159 [DSS43-ATCA]
2018 Dec Canberra DSS-35 Australian Telescope Compact Array 7159 [DSS35-ATCA]
2018 Dec Canberra DSS-36 Australian Telescope Compact Array 7159 [DSS36-ATCA]

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 MPO745323 (heliocentric ecliptic J2000)
Element Value Units
e 0.2099355
a 0.8275905 AU
i 8.53873 deg
om 273.73274 deg
w 326.95517 deg
ma 226.65693 deg
n 1.30912413 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
2015-08-27 17:45:00 0.24907 248.6 14.3
2015-12-24 13:08:00 0.07297 72.8 1024.0
2018-12-22 01:04:00 0.01890 18.9 102822.4
2021-12-17 17:26:00 0.03628 36.2 11363.7
2024-12-02 12:36:00 0.08834 88.2 527.8
2027-11-12 18:17:00 0.13819 137.9 111.4
2030-11-03 10:06:00 0.20185 201.4 29.8
2031-03-09 01:09:00 0.28835 287.8 8.6
2033-11-02 17:43:00 0.28278 282.2 9.2
2034-03-28 09:42:00 0.32234 321.7 5.8

Link to complete Close-Approach Data on SBDB at JPL