Asteroid Radar Database
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(2003 MS2)
Classification: APO [NEO, PHA]
H:21.21 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2003 Jun 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 2025-11-21 00:00 TT from MPO955382 (heliocentric ecliptic J2000)
Element Value Units
e 0.1263249
a 1.042197 AU
i 20.0259 deg
om 100.82326 deg
w 254.49853 deg
ma 317.67023 deg
n 0.9263591 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
2019-06-15 15:28:00 0.30982 309.2 0.1
2020-07-05 19:00:00 0.07853 78.4 16.1
2021-01-08 01:05:00 0.24033 239.9 0.3
2021-12-27 18:18:00 0.15308 152.8 1.6

Link to complete Close-Approach Data on SBDB at JPL