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13475 Orestes (1973 SX)
Classification: Jupiter Trojan          SPK-ID: 2013475
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 .0736004812722874 4.8765e-08  
a 5.177873291789274 9.0233e-08 au
q 4.796779325546661 2.6538e-07 au
i 7.941244941441195 6.119e-06 deg
node 353.4201683727255 3.3092e-05 deg
peri 122.7259590077955 5.442e-05 deg
M 238.4283492739645 4.704e-05 deg
tp 2460453.800314842112
(2024-May-23.30031484)
0.00058558 TDB
period 4303.537134016358
11.78
0.00011249
3.08e-07
d
yr
n .08365211889412073 2.1867e-09 deg/d
Q 5.558967258031887 9.6874e-08 au
  Orbit Determination Parameters
   # obs. used (total)      945  
   data-arc span      17120 days (46.87 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56432  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:43:56  

Additional Information
 Earth MOID = 3.82113 au 
 Jupiter MOID = .409536 au 
 T_jup = 2.976 
[ 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 11.5   n/a MPO412281  
diameter diameter 22.073 km 1.895 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.100   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

13475 Orestes           Discovered 1973 Sept. 19 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Orestes, a son of Agamemnon, was a child at the time of the murder of his father. Electra brought him to his uncle, where he lived together with his cousin Pylades. To avenge his father, Orestes killed Aegisthus and Clytaemnestra. The Erinyen persecuted him until he was absolved by the special jury at the Areopagus.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1973 SX = 1996 RO14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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