Minor Planet Radar Database
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137924 (2000 BD19)
Classification: ATE [NEO]
H:17.2 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2006 Feb Arecibo Arecibo 2380 [A]
2007 Dec Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
                 [edit]
name symbol value units uncertainty reference notes
morphology
number of components N 1 - single No evidence for binarity in low-SNR 2006 or 2007 data by JLM.
morphological type
spectrum-based or image-based dimensions
maximum range extent Rmax 0.6 km
minimum range extent Rmin 0.3 km
maximum Doppler bandwidth Bmax 2 Hz
minimum Doppler bandwidth Bmin 1.5 Hz
effective diameter Deff 0.75 km 0.15 Most likely radius is 2.5-3.0 us (375-450 m) based on low-SNR 2006 or 2007 data by JLM.
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 2019-04-27 00:00 TT from MPO436685 (heliocentric ecliptic J2000)
Element Value Units
e 0.8949806
a 0.8764815 AU
i 25.72207 deg
om 333.71885 deg
w 324.32502 deg
ma 330.32595 deg
n 1.20112973 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
2011-02-04 01:40:00 0.22408 223.6 5.4
2012-12-24 20:07:00 0.49862 497.6 0.3
2015-02-17 13:52:00 0.32720 326.6 1.4
2017-01-04 08:59:00 0.41125 410.4 0.7
2020-02-09 23:05:00 0.11421 114.0 56.5
2021-12-23 22:34:00 0.42830 427.4 0.6
2024-02-16 00:44:00 0.43479 433.9 0.5
2025-01-22 06:31:00 0.46628 465.3 0.4
2026-01-10 20:22:00 0.48153 480.6 0.4
2029-02-13 18:37:00 0.10976 109.5 64.9

Link to complete Close-Approach Data on SBDB at JPL