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226815 (2004 RC231)
Classification: Main-belt Asteroid          SPK-ID: 2226815
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 .05504997647662603 5.586e-08  
a 2.875942351640522 2.4303e-08 au
q 2.717621792834579 1.6677e-07 au
i 1.43835473678328 5.2769e-06 deg
node 344.9686849148749 0.00023879 deg
peri 81.84620719657299 0.00024442 deg
M 33.64920757506509 5.0605e-05 deg
tp 2458833.989727383837
(2019-Dec-16.48972738)
0.0002504 TDB
period 1781.429711475238
4.88
2.2581e-05
6.182e-08
d
yr
n .202084874682974 2.5615e-09 deg/d
Q 3.034262910446465 2.5641e-08 au
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      5619 days (15.38 yr)  
   first obs. used      2004-09-09  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51731  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 05:58:45  

Additional Information
 Earth MOID = 1.73174 au 
 Jupiter MOID = 2.12926 au 
 T_jup = 3.293 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457183.5 (2015-Jun-10.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05208262910132228 5.5621e-08  
q 2.725470720749354 1.6533e-07 au
tp 2457050.812128547511
(2015-Jan-28.31212855)
0.00026863 TDB
node 345.0903454069228 0.00023777 deg
peri 81.45951353827384 0.00024421 deg
i 1.443369887938939 5.2804e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      5619 days (15.38 yr)  
   first obs. used      2004-09-09  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51731  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 05:58:45  

Additional Information
 Jupiter MOID = 2.12926 au 
 T_jup = 3.293 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.093691215143799E-15 -9.109675145061916E-15 1.254191571605678E-12 1.966545184998596E-14 3.04870263559679E-13 -1.057951260593381E-15
q -9.109675145061916E-15 2.733346071576301E-14 -4.155632741709801E-12 -5.871889391795011E-14 -9.839426758900177E-13 3.312049249541869E-15
tp 1.254191571605678E-12 -4.155632741709801E-12 7.216361662099407E-8 5.651690679091427E-11 1.501091226878874E-8 1.185312822617022E-12
node 1.966545184998596E-14 -5.871889391795011E-14 5.651690679091427E-11 5.653540525469167E-8 -5.650442174788841E-8 6.647007651640899E-11
peri 3.04870263559679E-13 -9.839426758900177E-13 1.501091226878874E-8 -5.650442174788841E-8 5.96367561648012E-8 -6.622024967149402E-11
i -1.057951260593381E-15 3.312049249541869E-15 1.185312822617022E-12 6.647007651640899E-11 -6.622024967149402E-11 2.788290721490144E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO454629  

226815 (2004 RC231)          Discovered 2004-Sep-09 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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