Minor Planet Radar Database
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138175 (2000 EE104)
Classification: APO [NEO, PHA]
H:20.3 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2000 Apr Arecibo Arecibo 2380 [A]
2001 Apr Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
                 [edit]
name symbol value units uncertainty reference notes
morphology
number of components N 1 - single 2001DPS....33.6104H Appears bi-lobed at times, elongated at other times.
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 0.24 km 2001DPS....33.6104H
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 8 h 2
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 1.1 0.3 2008Icar..198..294B

Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO436687 (heliocentric ecliptic J2000)
Element Value Units
e 0.2931117
a 1.0042399 AU
i 5.23841 deg
om 25.58314 deg
w 280.9687 deg
ma 253.28469 deg
n 0.97937244 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
2010-02-12 11:22:00 0.31632 315.7 0.2
2010-07-09 16:30:00 0.30754 306.9 0.2
2011-02-07 11:48:00 0.32365 323.0 0.2
2011-07-16 18:16:00 0.31210 311.5 0.2
2012-02-02 15:40:00 0.32845 327.8 0.1
2012-07-22 17:08:00 0.31449 313.9 0.2
2013-01-27 20:27:00 0.33097 330.3 0.1
2013-07-29 16:51:00 0.31465 314.0 0.2
2014-01-23 00:39:00 0.33087 330.2 0.1
2014-08-05 19:30:00 0.31257 311.9 0.2
2015-01-18 03:06:00 0.32811 327.5 0.2
2015-08-12 21:36:00 0.30817 307.6 0.2
2016-01-13 05:01:00 0.32212 321.5 0.2
2016-08-18 10:48:00 0.30201 301.4 0.2
2017-01-07 13:17:00 0.31507 314.4 0.2
2017-08-25 04:34:00 0.29391 293.3 0.2
2018-01-02 18:20:00 0.30566 305.1 0.2
2018-09-01 01:12:00 0.28373 283.2 0.3
2018-12-28 19:04:00 0.29392 293.3 0.2
2019-09-08 05:12:00 0.27144 270.9 0.3
2019-12-23 12:36:00 0.27983 279.3 0.3
2020-09-14 18:57:00 0.25653 256.0 0.4
2020-12-16 17:30:00 0.26288 262.4 0.3
2021-09-23 01:58:00 0.23848 238.0 0.5
2021-12-10 05:06:00 0.24277 242.3 0.4
2022-10-02 17:37:00 0.21680 216.4 0.7
2022-12-02 11:25:00 0.21893 218.5 0.6
2023-10-15 07:11:00 0.19043 190.0 1.0
2023-11-22 00:51:00 0.19063 190.2 1.0
2024-11-06 07:27:00 0.15653 156.2 2.0
2025-11-06 14:44:00 0.12223 122.0 4.9
2026-11-08 08:22:00 0.09140 91.2 13.3
2027-11-09 12:19:00 0.06947 69.3 34.5
2028-11-09 15:26:00 0.05239 52.3 91.5

Link to complete Close-Approach Data on SBDB at JPL