Minor Planet Radar Database
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363027 (1998 ST27)
Classification: ATE [NEO, PHA]
H:19.5 mag, G:0.15

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2001 Oct Arecibo Arecibo 2380 [A]
2004 Oct Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
name symbol value units uncertainty reference notes
morphology
number of components N 2 - binary
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 0.3 0.01 2008Icar..198..294B Date: 2001T

Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO460425 (heliocentric ecliptic J2000)
Element Value Units
e 0.5299177
a 0.8193797 AU
i 21.05855 deg
om 197.55155 deg
w 322.46371 deg
ma 139.53479 deg
n 1.32885092 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
2010-09-25 13:06:00 0.49201 491.0 0.1
2012-08-12 08:39:00 0.37140 370.7 0.2
2015-05-28 04:23:00 0.47988 478.9 0.1
2015-09-04 12:53:00 0.36281 362.1 0.2
2018-09-22 07:40:00 0.30359 303.0 0.5
2021-10-07 01:04:00 0.18767 187.3 2.5
2024-10-12 01:52:00 0.02381 23.8 3046.4
2027-10-09 10:15:00 0.15058 150.3 5.3
2029-07-30 07:53:00 0.40760 406.8 0.2

Link to complete Close-Approach Data on SBDB at JPL