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447055 (2004 RA231)
Classification: Main-belt Asteroid          SPK-ID: 2447055
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1221261919521734 6.7618e-08  
a 3.09437139301068 4.6031e-08 au
q 2.716467598296544 2.275e-07 au
i 6.063032777125223 9.14e-06 deg
node 203.7159219834925 8.2951e-05 deg
peri 148.2411827493402 9.5411e-05 deg
M 269.2292797584698 4.8208e-05 deg
tp 2459101.803069386266
(2020-Sep-09.30306939)
0.00027156 TDB
period 1988.186328133665
5.44
4.4363e-05
1.215e-07
d
yr
n .1810695481131975 4.0403e-09 deg/d
Q 3.472275187724816 5.1652e-08 au
  Orbit Determination Parameters
   # obs. used (total)      118  
   data-arc span      5431 days (14.87 yr)  
   first obs. used      2004-09-09  
   last obs. used      2019-07-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .71865  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:48:48  

Additional Information
 Earth MOID = 1.71279 au 
 Jupiter MOID = 1.99314 au 
 T_jup = 3.204 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457429.5 (2016-Feb-11.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1247054573988225 6.8031e-08  
q 2.702954251397073 2.2849e-07 au
tp 2457121.064198464948
(2015-Apr-08.56419847)
0.0002481 TDB
node 203.7490111597735 8.2811e-05 deg
peri 148.8742148350841 9.4814e-05 deg
i 6.071102828933179 9.1484e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      118  
   data-arc span      5431 days (14.87 yr)  
   first obs. used      2004-09-09  
   last obs. used      2019-07-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .71865  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:48:48  

Additional Information
 Jupiter MOID = 1.99314 au 
 T_jup = 3.204 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.628186955092857E-15 -1.534503415153421E-14 2.654203522466137E-12 3.91656189349566E-16 5.214954378637791E-13 2.016126057835767E-15
q -1.534503415153421E-14 5.220889229918841E-14 -5.202299942567112E-12 -1.153497329561941E-14 -1.036377974639458E-12 -3.831223833310964E-15
tp 2.654203522466137E-12 -5.202299942567112E-12 6.155594458792941E-8 -2.805826523384557E-10 1.158366375666131E-8 7.813794682791265E-12
node 3.91656189349566E-16 -1.153497329561941E-14 -2.805826523384557E-10 6.857608142316538E-9 -6.869272408670803E-9 3.455517194435457E-10
peri 5.214954378637791E-13 -1.036377974639458E-12 1.158366375666131E-8 -6.869272408670803E-9 8.98975838243144E-9 -3.421399418583229E-10
i 2.016126057835767E-15 -3.831223833310964E-15 7.813794682791265E-12 3.455517194435457E-10 -3.421399418583229E-10 8.36940230428501E-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 16.3   n/a MPO440855  

447055 (2004 RA231)          Discovered 2004-Sep-09 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-10-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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