Minor Planet Radar Database
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154276 (2002 SY50)
Classification: APO [NEO, PHA]
H:17.6 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2002 Nov 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 0.44 0.08 2008Icar..198..294B

Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO297046 (heliocentric ecliptic J2000)
Element Value Units
e 0.6893682
a 1.7043557 AU
i 8.74311 deg
om 34.28037 deg
w 99.40038 deg
ma 122.30997 deg
n 0.44295919 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
2011-10-07 06:17:00 0.45212 451.2 0.4
2014-02-15 20:14:00 0.46316 462.2 0.3
2022-12-04 07:41:00 0.33530 334.6 1.0
2025-05-15 18:35:00 0.07046 70.3 233.2

Link to complete Close-Approach Data on SBDB at JPL