Asteroid Radar Database
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455176 (1999 VF22)
Classification: APO [NEO, PHA]
H:20.71 mag, G:0.15

  MPC page for this object   |  JPL SBDB page for this object   |  NEODyS-2 page for this object   |  ESA SSA page for this object  

History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2019 Feb 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 2025-05-05 00:00 TT from MPO904895 (heliocentric ecliptic J2000)
Element Value Units
e 0.7387834
a 1.3125076 AU
i 3.91904 deg
om 3.19618 deg
w 272.01428 deg
ma 14.56143 deg
n 0.65546773 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
2016-02-18 17:35:00 0.09424 94.1 11.8
2019-02-20 15:57:00 0.04917 49.1 112.0
2022-02-22 07:54:00 0.03587 35.8 330.8
2025-02-24 00:28:00 0.06996 69.8 33.2
2028-02-26 15:45:00 0.11405 113.8 6.1
2031-02-28 08:33:00 0.16758 167.2 1.6

Link to complete Close-Approach Data on SBDB at JPL