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189310 Polydamas (2006 AJ82)
Classification: Jupiter Trojan          SPK-ID: 2189310
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07504428614862334 6.5645e-08  
a 5.250251588249021 1.7014e-07 au
q 4.856250205708197 4.5375e-07 au
i 10.51640246701264 6.978e-06 deg
node 197.515412296463 2.6228e-05 deg
peri 42.03415932973222 5.0843e-05 deg
M 6.231274220697914 4.0466e-05 deg
tp 2458924.442339545031
(2020-Mar-15.94233955)
0.00049505 TDB
period 4394.086473171157
12.03
0.00021359
5.848e-07
d
yr
n .08192829208028593 3.9824e-09 deg/d
Q 5.644252970789846 1.829e-07 au
  Orbit Determination Parameters
   # obs. used (total)      312  
   data-arc span      7149 days (19.57 yr)  
   first obs. used      2000-10-01  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53266  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 05:08:14  

Additional Information
 Earth MOID = 3.85364 au 
 Jupiter MOID = .530172 au 
 T_jup = 2.961 
[ 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 12.8   n/a MPO475596  

189310 Polydamas           Discovered 2006 Jan. 3 by I. R. Ferrín at Mérida.
Polydamas was a Trojan commander whose battle strategy was more cautious than that of his friend Hektor. Polydamas and Hektor were born on the same night.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20091202/MPCPages.arcLast Updated: 2010-04-12

Alternate Designations
 2006 AJ82 = 2007 EA25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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