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JPL Small-Body Database Browser
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9818 Eurymachos (6591 P-L)
Classification: Jupiter Trojan          SPK-ID: 2009818
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .002580011735334003 5.5988e-08  
a 5.204936483515245 1.0286e-07 au
q 5.191507686306108 2.8943e-07 au
i 7.490578852151799 6.0111e-06 deg
node 18.56915203836641 4.1767e-05 deg
peri 104.3527162265878 0.0012235 deg
M 183.4050009036711 0.0012242 deg
tp 2460728.136725521887
(2025-Feb-21.63672552)
0.014777 TDB
period 4337.321130877946
11.87
0.00012857
3.52e-07
d
yr
n .08300054091847471 2.4603e-09 deg/d
Q 5.218365280724383 1.0312e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1214  
   data-arc span      24004 days (65.72 yr)  
   first obs. used      1954-02-10  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51092  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:19:45  

Additional Information
 Earth MOID = 4.19993 au 
 Jupiter MOID = .253814 au 
 T_jup = 2.983 
[ 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 11.0   n/a MPO416820  
diameter diameter 28.076 km 3.215 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.089   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

9818 Eurymachos           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Eurymachos was one of the heroes hidden in the Wooden Horse.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 6591 P-L = 1979 GB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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