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295634 (2008 SJ253)
Classification: Jupiter Trojan          SPK-ID: 2295634
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1059126159645086 9.929e-08  
a 5.185942612629369 2.1926e-07 au
q 4.636685864283974 6.6975e-07 au
i 23.80415624244154 1.2368e-05 deg
node 340.8507870598827 1.5544e-05 deg
peri 59.17129488934086 5.5679e-05 deg
M 326.3632958321317 5.5285e-05 deg
tp 2459403.542572019720
(2021-Jul-08.04257202)
0.00067101 TDB
period 4313.601154351572
11.81
0.00027357
7.49e-07
d
yr
n .08345695096006524 5.2929e-09 deg/d
Q 5.735199360974764 2.4249e-07 au
  Orbit Determination Parameters
   # obs. used (total)      234  
   data-arc span      8720 days (23.87 yr)  
   first obs. used      1996-09-13  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55074  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 19:26:11  

Additional Information
 Earth MOID = 3.70623 au 
 Jupiter MOID = .0171358 au 
 T_jup = 2.820 
[ 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 12.7   n/a MPO455185  
diameter diameter 13.644 km 0.476 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.087   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

295634 (2008 SJ253)          Discovered 2008-Sep-21 by CSS at Catalina
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

Alternate Designations
 2008 SJ253 = 1996 RD31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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