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20952 Tydeus (5151 T-2)
Classification: Jupiter Trojan          SPK-ID: 2020952
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08593974222550456 6.1877e-08  
a 5.169481960416034 1.1797e-07 au
q 4.725218013298484 3.9233e-07 au
i 9.987331178320764 6.7204e-06 deg
node 314.8262065623569 3.4098e-05 deg
peri 90.79868437294697 5.7523e-05 deg
M 301.7289288524537 5.1414e-05 deg
tp 2459695.395443120228
(2022-Apr-25.89544312)
0.00062672 TDB
period 4293.079818111701
11.75
0.00014695
4.023e-07
d
yr
n .0838558832475528 2.8704e-09 deg/d
Q 5.613745907533584 1.2811e-07 au
  Orbit Determination Parameters
   # obs. used (total)      788  
   data-arc span      16836 days (46.09 yr)  
   first obs. used      1973-09-20  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57607  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:25:56  

Additional Information
 Earth MOID = 3.7536 au 
 Jupiter MOID = .0854563 au 
 T_jup = 2.963 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.6   n/a MPO302193  

20952 Tydeus           Discovered 1973 Sept. 25 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Tydeus was an immortal hero, one of The Seven against Thebes. His son Diomedes was a great hero at Troy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 5151 T-2 = 1999 XE132 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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