Asteroid Radar Database
  Return to list of asteroid radar detections  

433953 (1997 XR2)
Classification: APO [NEO, PHA]
H:20.96 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
2016 Nov Goldstone Goldstone 8560 [G]
2016 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 MPO699677 (heliocentric ecliptic J2000)
Element Value Units
e 0.2007895
a 1.0762037 AU
i 7.19243 deg
om 250.66005 deg
w 84.63662 deg
ma 274.98698 deg
n 0.88280012 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
2015-05-22 17:01:00 0.19391 193.5 1.2
2016-03-07 20:57:00 0.32952 328.9 0.2
2016-11-18 15:05:00 0.04756 47.5 152.1
2025-06-14 23:03:00 0.10654 106.3 9.3
2026-01-27 06:42:00 0.31034 309.7 0.2
2026-11-30 06:36:00 0.27495 274.4 0.3

Link to complete Close-Approach Data on SBDB at JPL