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226813 (2004 RA227)
Classification: Main-belt Asteroid          SPK-ID: 2226813
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08516340230614654 7.058e-08  
a 2.792954612061362 2.3601e-08 au
q 2.555097094811573 1.9196e-07 au
i 3.506036276594229 6.0661e-06 deg
node 318.7664554212909 9.9049e-05 deg
peri 35.43492349358194 0.00010335 deg
M 149.0848113701087 3.061e-05 deg
tp 2458294.466767604807
(2018-Jun-24.96676760)
0.00014279 TDB
period 1704.881679940407
4.67
2.161e-05
5.916e-08
d
yr
n .2111583485445064 2.6765e-09 deg/d
Q 3.030812129311152 2.5611e-08 au
  Orbit Determination Parameters
   # obs. used (total)      367  
   data-arc span      7479 days (20.48 yr)  
   first obs. used      1999-08-12  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56622  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 05:58:27  

Additional Information
 Earth MOID = 1.5507 au 
 Jupiter MOID = 2.34559 au 
 T_jup = 3.320 
[ 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 15.9   n/a MPO470426  
diameter diameter 4.522 km 0.464 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226813 (2004 RA227)          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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