Asteroid Radar Database
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511684 (2015 BN509)
Classification: APO [NEO, PHA]
H:20.78 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
2017 Feb Arecibo Arecibo 2380 [A]
2018 Feb Goldstone Goldstone 8560 [G]

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 MPO905185 (heliocentric ecliptic J2000)
Element Value Units
e 0.568525
a 1.006832 AU
i 4.15631 deg
om 120.06407 deg
w 143.21611 deg
ma 1.32966 deg
n 0.97559269 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
2016-02-06 14:19:00 0.09602 95.8 14.0
2017-02-07 21:31:00 0.04165 41.6 251.1
2018-02-09 19:59:00 0.03298 32.9 557.8
2019-02-11 11:00:00 0.08430 84.1 22.0
2020-02-12 08:04:00 0.14090 140.6 3.7
2021-02-10 20:11:00 0.19787 197.5 1.1

Link to complete Close-Approach Data on SBDB at JPL