Asteroid Radar Database
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1864 Daedalus (1971 FA)
Classification: APO [NEO]
H:14.87 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2015 Nov 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 E2024-H69 (heliocentric ecliptic J2000)
Element Value Units
e 0.614296
a 1.4609818 AU
i 22.21387 deg
om 6.6151 deg
w 325.662 deg
ma 282.65147 deg
n 0.55813195 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
2015-11-27 06:14:00 0.33232 331.7 9.2
2017-05-08 23:45:00 0.43489 434.0 3.6
2024-08-13 15:16:00 0.49242 491.4 2.3
2031-09-22 12:02:00 0.41677 415.9 4.2
2033-04-23 23:05:00 0.40650 405.7 4.5

Link to complete Close-Approach Data on SBDB at JPL