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22227 Polyxenos (5030 T-2)
Classification: Jupiter Trojan          SPK-ID: 2022227
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1337327910057779 6.9725e-08  
a 5.229563807216912 1.6983e-07 au
q 4.530199643534992 4.3043e-07 au
i 10.95105148633655 8.9913e-06 deg
node 289.8697905825816 4.1312e-05 deg
peri 157.6341483834591 5.9482e-05 deg
M 266.8991392629733 4.8696e-05 deg
tp 2460130.160183520189
(2023-Jul-04.66018352)
0.00063067 TDB
period 4368.140776012508
11.96
0.00021278
5.826e-07
d
yr
n .08241492627181968 4.0146e-09 deg/d
Q 5.928927970898831 1.9254e-07 au
  Orbit Determination Parameters
   # obs. used (total)      413  
   data-arc span      16811 days (46.03 yr)  
   first obs. used      1973-09-20  
   last obs. used      2019-09-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62202  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:31:44  

Additional Information
 Earth MOID = 3.54978 au 
 Jupiter MOID = .654229 au 
 T_jup = 2.946 
[ 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 11.9   n/a MPO337446  

22227 Polyxenos           Discovered 1973 Sept. 25 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Polyxenos came from Elis and fought against the Trojans.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010705/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 5030 T-2 = 1989 EN4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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