Minor Planet Radar Database
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433 Eros (1898 DQ)
Classification: AMO [NEO]
H:11.16 mag, G:0.46

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
1975 Jan Goldstone Goldstone 8495 [G(8495)]
1975 Jan Goldstone Goldstone 2380 [G(2380)]
1975 Jan Arecibo Arecibo 430 [A(430)]
1988 Sep Arecibo Arecibo 2380 [A]
2012 Jan Goldstone Goldstone 8560 [G]
2019 Jan Goldstone Goldstone 8560 [G]
2019 Jan 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 0.28 0.06 2008Icar..198..294B Date: 1988T

Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO467611 (heliocentric ecliptic J2000)
Element Value Units
e 0.2227358
a 1.4581123 AU
i 10.82857 deg
om 304.30629 deg
w 178.82127 deg
ma 47.2395 deg
n 0.55978029 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
2012-01-31 11:01:00 0.17868 178.3 608.1
2019-01-15 06:01:00 0.20860 208.2 354.4
2025-11-30 02:18:00 0.39765 396.9 37.3

Link to complete Close-Approach Data on SBDB at JPL