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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .175815911890127 8.9918e-08  
a 2.403526686753314 2.5792e-08 au
q 1.980948450569524 2.105e-07 au
i 2.108041171551773 7.6461e-06 deg
node 317.4020247284769 0.00018505 deg
peri 15.02859040757815 0.00018655 deg
M 319.8472557077716 3.3266e-05 deg
tp 2459152.304477717186
(2020-Oct-29.80447772)
0.00012745 TDB
period 1361.043010670737
3.73
2.1908e-05
5.998e-08
d
yr
n .264503029792268 4.2576e-09 deg/d
Q 2.826104922937104 3.0327e-08 au
  Orbit Determination Parameters
   # obs. used (total)      200  
   data-arc span      7514 days (20.57 yr)  
   first obs. used      1998-09-26  
   last obs. used      2019-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56951  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 12:49:19  

Additional Information
 Earth MOID = .970565 au 
 Jupiter MOID = 2.52866 au 
 T_jup = 3.502 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456894.5 (2014-Aug-25.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1744231550507923 8.9355e-08  
q 1.984892123861038 2.0843e-07 au
tp 2456429.783677366365
(2013-May-17.28367737)
0.00010241 TDB
node 317.4685148971128 0.00018483 deg
peri 14.83554894689198 0.00018636 deg
i 2.109788181707029 7.6419e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      200  
   data-arc span      7514 days (20.57 yr)  
   first obs. used      1998-09-26  
   last obs. used      2019-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56951  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 12:49:19  

Additional Information
 Jupiter MOID = 2.52866 au 
 T_jup = 3.502 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.984247150296858E-15 -1.853434505595973E-14 5.135632401934982E-12 -2.028262259764033E-14 1.069006836927302E-12 -3.091176157866638E-15
q -1.853434505595973E-14 4.344170813097974E-14 -1.134781485971215E-11 4.131915721201784E-14 -2.318250902621968E-12 7.07878682071482E-15
tp 5.135632401934982E-12 -1.134781485971215E-11 1.048843971858372E-8 -5.455797818885263E-11 2.481968881231316E-9 -5.499545425322094E-12
node -2.028262259764033E-14 4.131915721201784E-14 -5.455797818885263E-11 3.416058497180089E-8 -3.41500933576136E-8 3.743668224915373E-10
peri 1.069006836927302E-12 -2.318250902621968E-12 2.481968881231316E-9 -3.41500933576136E-8 3.473037592201427E-8 -3.753916486034796E-10
i -3.091176157866638E-15 7.07878682071482E-15 -5.499545425322094E-12 3.743668224915373E-10 -3.753916486034796E-10 5.839791478945834E-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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