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16494 Oka (1990 SP8)
Classification: Main-belt Asteroid          SPK-ID: 2016494
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03505809124275526 7.5913e-08  
a 3.056435568373928 3.8926e-08 AU
q 2.949282771340273 2.3538e-07 AU
i 10.38343918550132 7.7839e-06 deg
node 150.2716964217405 3.2989e-05 deg
peri 7.844989156197781 9.5649e-05 deg
M 358.468405210617 8.8439e-05 deg
tp 2456808.803528369504
(2014-May-31.30352837)
0.00047945 JED
period 1951.736995805285
5.34
3.7285e-05
1.021e-07
d
yr
n .1844510816640355 3.5237e-09 deg/d
Q 3.163588365407584 4.029e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      984  
   data-arc span      8600 days (23.55 yr)  
   first obs. used      1990-09-14  
   last obs. used      2014-04-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55319  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:09:09  

Additional Information
 Earth MOID = 1.95939 AU 
 T_jup = 3.209 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.9 mag n/a MPO256984  

16494 Oka           Discovered 1990 Sept. 22 by E. W. Elst at the European Southern Observatory.
The Oka river has its source in the central Russian Upland. With a total length of 1490 km, it is the largest right tributary of the Volga. At the confluence with the Volga it meets the city of Nizhny Novgorod.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060613/MPCPages.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 1990 SP8 = 1998 DU3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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