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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09817899933292015 7.4237e-08  
a 2.290437722739033 1.3927e-08 AU
q 2.065564839086142 1.6721e-07 AU
i 4.057105525326789 7.4481e-06 deg
node 18.74344396413856 6.5696e-05 deg
peri 338.1936157055101 7.203e-05 deg
M 256.8579092123365 3.3563e-05 deg
tp 2457363.251810308839
(2015-Dec-06.75181031)
0.00011959 JED
period 1266.123759116211
3.47
1.1548e-05
3.162e-08
d
yr
n .2843323943713764 2.5933e-09 deg/d
Q 2.515310606391923 1.5294e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      963  
   data-arc span      8326 days (22.80 yr)  
   first obs. used      1991-09-11  
   last obs. used      2014-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50537  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:43:43  

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 (675)
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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