Asteroid Radar Database
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(2018 MD7)
Classification: ATE [NEO]
H:22.7 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2018 Aug 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 2025-05-05 00:00 TT from E2021-Y48 (heliocentric ecliptic J2000)
Element Value Units
e 0.1098456
a 0.9470903 AU
i 8.22958 deg
om 134.32084 deg
w 313.48857 deg
ma 353.50653 deg
n 1.06934284 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
2017-04-21 23:39:00 0.29978 299.2 0.0
2018-01-21 14:05:00 0.13368 133.4 0.7
2018-08-07 05:40:00 0.05886 58.7 12.0
2029-04-14 20:46:00 0.21924 218.8 0.1
2029-12-25 14:26:00 0.16739 167.1 0.3
2030-08-05 00:41:00 0.16878 168.4 0.3

Link to complete Close-Approach Data on SBDB at JPL