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8317 Eurysaces (4523 P-L)
Classification: Jupiter Trojan          SPK-ID: 2008317
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04654480485062498 4.7639e-08  
a 5.303191607532208 7.6821e-08 au
q 5.056355589074149 2.7297e-07 au
i .9461350138807507 5.2975e-06 deg
node 208.0978406421431 0.00026716 deg
peri 114.6085857315462 0.0002728 deg
M 46.67692107240693 5.277e-05 deg
tp 2458422.132200981960
(2018-Oct-30.63220098)
0.00065869 TDB
period 4460.714264411478
12.21
9.6926e-05
2.654e-07
d
yr
n .08070456403633744 1.7536e-09 deg/d
Q 5.550027625990266 8.0397e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1661  
   data-arc span      21651 days (59.28 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52008  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 21:12:21  

Additional Information
 Earth MOID = 4.04398 au 
 Jupiter MOID = .118041 au 
 T_jup = 2.998 
[ 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 11.1   n/a MPO458912  
diameter diameter 26.210 km 0.394 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.076   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

8317 Eurysaces           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Named for the son of Ajax by Tecmessa, known for his enormous shield.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19981005/MPCPages.arcLast Updated: 2009-11-17

Alternate Designations
 4523 P-L = 1977 CE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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