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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 ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07419810825302778 4.1564e-08  
a 5.177901724764008 8.3032e-08 au
q 4.793711212066429 2.4608e-07 au
i 7.941490998950733 6.0187e-06 deg
node 353.4205992967396 2.5302e-05 deg
peri 122.5973207311152 4.9303e-05 deg
M 271.7563118395757 4.5541e-05 deg
tp 2460451.397546884388
(2024-May-20.89754688)
0.0005592 TDB
period 4303.572581735052
11.78
0.00010352
2.834e-07
d
yr
n .08365142986733605 2.0121e-09 deg/d
Q 5.562092237461588 8.9192e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1218  
   data-arc span      17489 days (47.88 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52309  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 21:04:21  

Additional Information
 Earth MOID = 3.81853 au 
 Jupiter MOID = .411465 au 
 T_jup = 2.975 
[ 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 11.61   n/a E2021B10  
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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