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JPL Small-Body Database Browser
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295529 (2008 RK121)
Classification: Jupiter Trojan          SPK-ID: 2295529
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1396354694779441 1.2602e-07  
a 5.231459270103247 2.1659e-07 au
q 4.500961998867637 7.896e-07 au
i 5.357226254681674 1.072e-05 deg
node 189.5154440306 9.1729e-05 deg
peri 188.4900141064768 9.7541e-05 deg
M 305.0956716765401 3.9774e-05 deg
tp 2459267.056214289334
(2021-Feb-21.55621429)
0.00050638 TDB
period 4370.515849505953
11.97
0.00027142
7.431e-07
d
yr
n .0823701394517754 5.1154e-09 deg/d
Q 5.961956541338855 2.4683e-07 au
  Orbit Determination Parameters
   # obs. used (total)      131  
   data-arc span      8377 days (22.93 yr)  
   first obs. used      1996-09-20  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62428  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:43:19  

Additional Information
 Earth MOID = 3.50229 au 
 Jupiter MOID = .455706 au 
 T_jup = 2.972 
[ 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 13.7   n/a MPO455184  
diameter diameter 11.283 km 1.297 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.042   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

295529 (2008 RK121)          Discovered 2008-Sep-02 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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