Asteroid Radar Database
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12711 Tukmit (1991 BB)
Classification: APO [NEO]
H:15.85 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2000 Aug 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 0.27 0.05 2008Icar..198..294B Date: 2000T

Orbital Elements at Epoch 2020-12-17 00:00 TT from MPO636258 (heliocentric ecliptic J2000)
Element Value Units
e 0.2721527
a 1.1863643 AU
i 38.4886 deg
om 294.97982 deg
w 322.89857 deg
ma 303.34904 deg
n 0.76274076 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
2013-01-28 11:06:00 0.39317 392.4 1.6
2013-06-26 12:49:00 0.34562 344.9 2.5
2022-01-23 21:59:00 0.39133 390.6 1.6
2022-07-15 10:32:00 0.12926 129.0 76.8
2031-01-18 04:01:00 0.45547 454.6 0.9
2031-08-01 08:55:00 0.22244 222.0 11.6

Link to complete Close-Approach Data on SBDB at JPL