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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04660503595065127 3.9527e-08  
a 5.30510079531767 6.8577e-08 au
q 5.057856382030061 2.1045e-07 au
i .9458977514767286 5.2182e-06 deg
node 208.1001199513745 0.0002205 deg
peri 115.0808842352275 0.00022685 deg
M 62.35685047846084 5.1427e-05 deg
tp 2458427.426907571574
(2018-Nov-04.92690757)
0.00064264 TDB
period 4463.123315863511
12.22
8.6539e-05
2.369e-07
d
yr
n .08066100228968204 1.564e-09 deg/d
Q 5.552345208605279 7.1773e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2101  
   data-arc span      22078 days (60.45 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48097  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:30:40  

Additional Information
 Earth MOID = 4.04361 au 
 Jupiter MOID = .115228 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 11.14   n/a E2021B10  
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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