Minor Planet Radar Database
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2063 Bacchus (1977 HB)
Classification: APO [NEO]
H:17.3 mag, G:0.15
Wavefront file Reference: 1999Icar..139..309B

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History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
1996 Mar Goldstone Goldstone 8510 [G]
2012 Sep Arecibo Arecibo 2380 [A]
2015 Apr Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
name symbol value units uncertainty reference notes
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 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
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 0.21 0.01 2008Icar..198..294B Date: 1996T

Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO381269 (heliocentric ecliptic J2000)
Element Value Units
e 0.3494748
a 1.0778853 AU
i 9.43223 deg
om 33.09692 deg
w 55.32924 deg
ma 281.54612 deg
n 0.88073495 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
2012-09-04 23:49:00 0.23684 236.4 5.7
2013-07-20 10:34:00 0.42955 428.7 0.7
2013-12-15 19:00:00 0.30187 301.3 2.5
2014-05-18 12:17:00 0.39971 398.9 0.9
2015-04-07 19:13:00 0.19520 194.8 11.3
2021-08-21 19:16:00 0.49889 497.9 0.4
2022-10-29 07:29:00 0.22142 221.0 7.3
2023-06-11 13:14:00 0.46205 461.1 0.6
2024-03-31 02:36:00 0.12000 119.8 61.3

Link to complete Close-Approach Data on SBDB at JPL