Minor Planet Radar Database
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68950 (2002 QF15)
Classification: APO [NEO, PHA]
H:16.4 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2003 Nov Arecibo Arecibo 2380 [A]
2006 May Arecibo Arecibo 2380 [A]
2016 Nov Arecibo Arecibo 2380 [A]
2016 Nov Goldstone Goldstone 8560 [G]
2019 May 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 0.23 0.02 2008Icar..198..294B Date: 2003T

Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO474568 (heliocentric ecliptic J2000)
Element Value Units
e 0.3442377
a 1.0568138 AU
i 25.15544 deg
om 236.23676 deg
w 255.49971 deg
ma 40.80484 deg
n 0.90720689 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
2015-10-18 01:47:00 0.41182 411.0 3.0
2016-11-19 20:29:00 0.16097 160.6 80.1
2018-03-01 16:40:00 0.45712 456.2 2.1
2018-05-22 20:51:00 0.42066 419.8 2.8
2019-05-20 09:02:00 0.08825 88.1 648.1
2028-10-31 01:42:00 0.19290 192.5 42.6

Link to complete Close-Approach Data on SBDB at JPL