Minor Planet Radar Database
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7822 (1991 CS)
Classification: APO [NEO, PHA]
H:17.4 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
1996 Aug Goldstone Goldstone 8510 [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 0.28 0.01 2008Icar..198..294B Date: 1996T

Orbital Elements at Epoch 2020-05-31 00:00 TT from MPO458908 (heliocentric ecliptic J2000)
Element Value Units
e 0.1646463
a 1.1229207 AU
i 37.12098 deg
om 156.85257 deg
w 249.434 deg
ma 296.83359 deg
n 0.82828625 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
2010-02-25 03:31:00 0.36287 362.1 1.0
2015-09-04 23:29:00 0.15956 159.2 17.8
2016-02-23 06:13:00 0.16830 168.0 14.8
2021-08-25 19:35:00 0.14542 145.1 24.6
2022-02-24 07:19:00 0.27904 278.5 2.5
2027-08-14 20:05:00 0.45029 449.4 0.5

Link to complete Close-Approach Data on SBDB at JPL