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26838 (1991 RC9)
Classification: Main-belt Asteroid          SPK-ID: 2026838
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09817898486352848 6.0613e-08  
a 2.290437720989087 1.2084e-08 AU
q 2.065564870649245 1.3966e-07 AU
i 4.057104565217769 6.6485e-06 deg
node 18.74343509303157 6.5235e-05 deg
peri 338.1936213667726 6.9935e-05 deg
M 256.8579136791532 2.6676e-05 deg
tp 2457363.251794183272
(2015-Dec-06.75179418)
9.4507e-05 JED
period 1266.123757665191
3.47
1.002e-05
2.743e-08
d
yr
n .2843323946972308 2.2501e-09 deg/d
Q 2.515310571328929 1.327e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1038  
   data-arc span      8738 days (23.92 yr)  
   first obs. used      1991-09-11  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51181  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 15:09:18  

Additional Information
 Earth MOID = 1.06226 AU 
 T_jup = 3.589 
[ 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 14.5 mag n/a PDS3 (MPO 14473)  

26838 (1991 RC9)          Discovered 1991-Sep-11 by Holt, H. E. at Palomar
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RC9 = 1998 SJ159 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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