Small-Body Radar Database

11500 Tomaiyowit (1989 UR)
Classification: APO [NEO, PHA]
H:18.3 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
2007 Nov Goldstone Goldstone 8560 [G]
2019 Jun 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 0.37 0.03 2008Icar..198..294B Date: 2007T

Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO467796 (heliocentric ecliptic J2000)
Element Value Units
e 0.3557232
a 1.0796456 AU
i 10.31053 deg
om 234.43603 deg
w 289.4438 deg
ma 6.87378 deg
n 0.87858188 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
2010-06-28 05:59:00 0.32029 319.7 2.7
2016-11-18 12:22:00 0.20928 208.9 12.0
2017-10-12 10:58:00 0.42026 419.4 1.1
2018-03-07 07:35:00 0.32732 326.7 2.5
2018-08-09 16:51:00 0.46159 460.7 0.8
2019-06-21 00:54:00 0.18703 186.7 17.7
2025-11-12 12:50:00 0.35538 354.7 1.9
2026-10-27 08:20:00 0.35348 352.8 1.9
2027-02-12 03:50:00 0.31815 317.5 2.8
2027-08-23 12:12:00 0.49036 489.4 0.6
2028-06-11 19:20:00 0.08883 88.7 236.2

Link to complete Close-Approach Data on SBDB at JPL