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226781 (2004 RJ145)
Classification: Main-belt Asteroid          SPK-ID: 2226781
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1208133274283798 6.7437e-08  
a 2.72065046545093 2.4362e-08 au
q 2.391959629950233 1.8076e-07 au
i 5.04223184874281 6.4633e-06 deg
node 160.6999641360086 7.8573e-05 deg
peri 240.5018042266024 8.2004e-05 deg
M 137.3738833199143 2.3753e-05 deg
tp 2458375.026051647066
(2018-Sep-13.52605165)
0.00010692 TDB
period 1639.107929144598
4.49
2.2016e-05
6.028e-08
d
yr
n .2196316628081187 2.95e-09 deg/d
Q 3.049341300951627 2.7305e-08 au
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      6998 days (19.16 yr)  
   first obs. used      2000-12-06  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .548  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 05:57:54  

Additional Information
 Earth MOID = 1.40471 au 
 Jupiter MOID = 2.3536 au 
 T_jup = 3.343 
[ 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 16.7   n/a MPO413101  

226781 (2004 RJ145)          Discovered 2004-Sep-09 by LINEAR at Socorro
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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