Minor Planet Radar Database
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29075 (1950 DA)
Classification: APO [NEO, PHA]
H:17.1 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2001 Mar Arecibo Arecibo 2380 [A]
2001 Mar Goldstone Goldstone 8560 [G]
2012 Apr 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 0.14 0.03 2008Icar..198..294B Date: 2001T

Orbital Elements at Epoch 2020-05-31 00:00 TT from MPO493048 (heliocentric ecliptic J2000)
Element Value Units
e 0.5078268
a 1.698569 AU
i 12.16753 deg
om 356.66213 deg
w 224.68335 deg
ma 230.88293 deg
n 0.44522474 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
2012-05-20 16:10:00 0.23904 238.6 5.7
2021-02-05 10:48:00 0.49451 493.5 0.5
2023-07-22 21:26:00 0.28342 282.9 3.2

Link to complete Close-Approach Data on SBDB at JPL