Asteroid Radar Database
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(2017 NH)
Classification: APO [NEO, PHA]
H:21.6 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2017 Jul 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 2026-06-09 00:00 TT from E2026-T09 (heliocentric ecliptic J2000)
Element Value Units
e 0.3296399
a 1.3937934 AU
i 6.2497 deg
om 269.49448 deg
w 71.84517 deg
ma 122.34257 deg
n 0.59897192 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
2017-07-12 19:04:00 0.04246 42.4 61.4
2017-11-18 21:42:00 0.34523 344.5 0.0
2022-06-17 00:22:00 0.37975 379.0 0.0
2035-11-12 15:48:00 0.33366 333.0 0.1

Link to complete Close-Approach Data on SBDB at JPL