Minor Planet Radar Database
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65909 (1998 FH12)
Classification: APO [NEO, PHA]
H:19.2 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2003 Jun Goldstone Goldstone 8560 [G]
2003 Jun Arecibo Arecibo 2380 [A]
2003 Jun Goldstone Arecibo 8560 [G-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 0.16 0.03 2008Icar..198..294B Date: 2003T

Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO337764 (heliocentric ecliptic J2000)
Element Value Units
e 0.539687
a 1.0911562 AU
i 3.55992 deg
om 108.61586 deg
w 284.4901 deg
ma 267.32594 deg
n 0.86471642 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
2011-06-23 11:56:00 0.13789 137.6 5.8
2012-09-28 07:18:00 0.47750 476.5 0.1
2014-01-01 04:20:00 0.35370 353.0 0.2
2014-02-22 20:41:00 0.34724 346.5 0.2
2015-03-09 11:32:00 0.49958 498.6 0.1
2019-06-18 01:28:00 0.26306 262.5 0.6
2020-06-03 13:47:00 0.49164 490.7 0.1
2020-09-14 01:00:00 0.45102 450.1 0.1
2021-12-11 18:48:00 0.41796 417.1 0.1
2022-03-06 20:19:00 0.44192 441.0 0.1
2023-03-03 13:13:00 0.37088 370.1 0.2
2027-06-12 05:29:00 0.39210 391.3 0.1
2028-06-13 23:43:00 0.41142 410.6 0.1
2028-08-27 20:45:00 0.40515 404.3 0.1

Link to complete Close-Approach Data on SBDB at JPL