Asteroid Radar Database
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(2018 XC4)
Classification: APO [NEO]
H:26.3 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2018 Dec 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 2024-03-31 00:00 TT from MPO467277 (heliocentric ecliptic J2000)
Element Value Units
e 0.3106062
a 1.2680682 AU
i 2.17166 deg
om 95.07613 deg
w 52.42267 deg
ma 218.1021 deg
n 0.69022417 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
2016-05-07 21:39:00 0.26433 263.8 0.0
2018-12-21 15:34:00 0.00411 4.1 0.0
2019-06-10 02:06:00 0.39360 392.8 0.0
2026-05-19 03:27:00 0.43465 433.8 0.0
2028-12-16 22:48:00 0.04303 42.9 3.0
2029-06-14 17:35:00 0.41605 415.2 0.0

Link to complete Close-Approach Data on SBDB at JPL