Asteroid Radar Database
  Return to list of asteroid radar detections  

1 Ceres
Classification:  []
H:3.56 mag, G:0.15

  MPC page for this object   |  JPL SBDB page for this object   |  ASTDyS page for this object  

History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
1977 Mar Arecibo Arecibo 2380 [A]
1984 Oct Arecibo Arecibo 2380 [A]
1986 Feb Arecibo Arecibo 2380 [A]
1990 Jan Arecibo Arecibo 2380 [A]
1995 Feb Goldstone Goldstone 8560 [G]
2000 Mar Arecibo Arecibo 2380 [A]
2004 Jan Arecibo Arecibo 2380 [A]
2018 Feb 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 0.041 .005 2007Icar..186..126M Freq: 2380
.037+/-0.01 at (3.5cm)
radar albedo SC σ̂SC
radar albedo σ̂T
circular polarization ratio μC 0.03 .03 2007Icar..186..126M Freq: 2380
0.00+/-0.7 at (3.5cm)

Orbital Elements at Epoch 2022-01-21 00:00 TT from MPO660785 (heliocentric ecliptic J2000)
Element Value Units
e 0.078501
a 2.7660431 AU
i 10.58769 deg
om 80.26858 deg
w 73.63703 deg
ma 291.37563 deg
n 0.21424745 deg/d

Link to complete orbital information at Minor Planet Center