Asteroid Radar Database
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2102 Tantalus (1975 YA)
Classification: APO [NEO, PHA]
H:16 mag, G:0.15

  MPC page for this object   |  JPL SBDB page for this object   |  NEODyS-2 page for this object   |  ESA SSA page for this object  

History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2016 Dec Goldstone Goldstone 8560 [G]
2016 Dec 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 2024-10-17 00:00 TT from E2024-C06 (heliocentric ecliptic J2000)
Element Value Units
e 0.2992766
a 1.2900693 AU
i 64.00478 deg
om 94.35214 deg
w 61.51619 deg
ma 78.27057 deg
n 0.67264286 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
2016-12-30 14:32:00 0.13748 137.2 31.2
2017-06-22 05:02:00 0.33211 331.4 1.4
2019-12-17 21:00:00 0.25824 257.7 3.5
2020-06-19 03:59:00 0.48300 482.0 0.4

Link to complete Close-Approach Data on SBDB at JPL