Minor Planet Radar Database
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66391 Moshup (1999 KW4)
Classification: ATE [NEO, PHA]
H:16.6 mag, G:0.15
Wavefront file Reference: 2006Sci...314.1276O

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2001 May Goldstone Goldstone 8560 [G]
2001 May Arecibo Arecibo 2380 [A]
2001 May Arecibo Goldstone 2380 [A-G]
2002 Jun Arecibo Arecibo 2380 [A]
2017 May Arecibo Arecibo 2380 [A]
2018 May Arecibo Arecibo 2380 [A]
2018 May Goldstone Goldstone 8560 [G]
2019 May Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
name symbol value units uncertainty reference notes
morphology
number of components N 2 - binary 2006Sci...314.1276O
morphological type multiple
spectrum-based or image-based dimensions
maximum range extent Rmax km
minimum range extent Rmin km
maximum Doppler bandwidth Bmax 1 Hz 0.15 Ostro, pers. comm. 2380 MHz
minimum Doppler bandwidth Bmin 0.64 Hz 0.13 Ostro, pers. comm. 2380 MHz
effective diameter Deff km
quality code for size Q
shape-based dimensions
equivalent diameter Dequ km
extent along principal axis x Ex 0.571 km 2006Sci...314.1276O
extent along principal axis y Ey 0.463 km 2006Sci...314.1276O
extent along principal axis z Ez 0.349 km 2006Sci...314.1276O
DEEVE extent along x Dx 0.595 km 2006Sci...314.1276O
DEEVE extent along y Dy 0.45 km 2006Sci...314.1276O
DEEVE extent along z Dz 0.343 km 2006Sci...314.1276O
surface area A 0.674 km2 2006Sci...314.1276O
volume V 0.048 km3 2006Sci...314.1276O
spin
spin period Pspin 17.4223 h 2006Sci...314.1276O Assumed
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

Binary Orbital Elements at Epoch 52052.0000 (ecliptic J2000)
Reference: 2006Sci...314.1276O
Element Value Units
e 0.014
a 2.56759 km
i 151.20032 deg
om 58.35314 deg
w 218.92678 deg
ma 337.12218 deg
n 495.2535951 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
2014-06-07 08:40:00 0.41674 415.9 0.5
2015-06-08 07:30:00 0.32438 323.7 1.2
2016-06-04 23:47:00 0.24477 244.3 3.2
2017-05-31 14:55:00 0.16731 167.0 12.1
2018-05-27 13:23:00 0.07818 78.0 170.6
2019-05-25 23:05:00 0.03464 34.6 2816.8
2020-05-26 17:20:00 0.15983 159.5 14.2
2021-05-31 02:48:00 0.29617 295.6 1.6
2022-06-06 01:34:00 0.43559 434.7 0.4

Link to complete Close-Approach Data on SBDB at JPL