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266720 (2009 RJ)
Classification: Main-belt Asteroid          SPK-ID: 2266720
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .1758158372175317 6.7229e-08  
a 2.403526664139735 1.8389e-08 au
q 1.980948611409346 1.6664e-07 au
i 2.108040107459543 7.1784e-06 deg
node 317.4019890116812 0.00016549 deg
peri 15.02860550145512 0.00016631 deg
M 319.8472904773677 1.8321e-05 deg
tp 2459152.304344122265
(2020-Oct-29.80434412)
6.9718e-05 TDB
period 1361.042991462678
3.73
1.562e-05
4.277e-08
d
yr
n .2645030335251329 3.0356e-09 deg/d
Q 2.826104716870123 2.1623e-08 au
  Orbit Determination Parameters
   # obs. used (total)      216  
   data-arc span      7969 days (21.82 yr)  
   first obs. used      1998-09-26  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56894  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:23:50  

Additional Information
 Earth MOID = .970565 au 
 Jupiter MOID = 2.52866 au 
 T_jup = 3.502 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457071.5 (2015-Feb-18.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1745228006163719 6.706e-08  
q 1.985015176625215 1.6584e-07 au
tp 2456430.546875808883
(2013-May-18.04687581)
6.9052e-05 TDB
node 317.4693472779533 0.00016532 deg
peri 15.00973197979769 0.00016616 deg
i 2.10913912378503 7.1781e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      216  
   data-arc span      7969 days (21.82 yr)  
   first obs. used      1998-09-26  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56894  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:23:50  

Additional Information
 Jupiter MOID = 2.52866 au 
 T_jup = 3.502 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.497054774790661E-15 -1.107775296064681E-14 6.756730625877172E-13 -2.004007655985914E-14 9.55453125038629E-14 -1.825248438630486E-15
q -1.107775296064681E-14 2.750253182635072E-14 -1.815558925250305E-12 4.954882245479719E-14 -2.479807741606891E-13 4.63327077304211E-15
tp 6.756730625877172E-13 -1.815558925250305E-12 4.768161171430543E-9 3.89976691755918E-13 1.177665224091801E-9 -2.128739612141896E-12
node -2.004007655985914E-14 4.954882245479719E-14 3.89976691755918E-13 2.732909215706721E-8 -2.730970402252293E-8 1.59030349021263E-10
peri 9.55453125038629E-14 -2.479807741606891E-13 1.177665224091801E-9 -2.730970402252293E-8 2.760783381629029E-8 -1.594165748704623E-10
i -1.825248438630486E-15 4.63327077304211E-15 -2.128739612141896E-12 1.59030349021263E-10 -1.594165748704623E-10 5.15245974425678E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.1   n/a MPO433731  

266720 (2009 RJ)          Discovered 2009-Sep-09 by La Sagra at La Sagra
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2009 RJ = 1998 SX150 = 2000 BR48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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