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266787 (2009 SJ260)
Classification: Main-belt Asteroid          SPK-ID: 2266787
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1145827110563221 6.7207e-08  
a 2.698860746103639 2.2791e-08 au
q 2.389617965051596 1.7904e-07 au
i 7.711226022444032 7.2839e-06 deg
node 19.36287481223827 4.5563e-05 deg
peri 7.257730688393088 5.5299e-05 deg
M 125.4986837043623 2.8555e-05 deg
tp 2458435.945580015114
(2018-Nov-13.44558001)
0.00012953 TDB
period 1619.455959182258
4.43
2.0513e-05
5.616e-08
d
yr
n .2222968756629736 2.8158e-09 deg/d
Q 3.008103527155683 2.5402e-08 au
  Orbit Determination Parameters
   # obs. used (total)      304  
   data-arc span      6705 days (18.36 yr)  
   first obs. used      2001-12-19  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60646  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 15:25:30  

Additional Information
 Earth MOID = 1.39389 au 
 Jupiter MOID = 2.44847 au 
 T_jup = 3.346 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457240.5 (2015-Aug-06.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1123153566701993 6.6964e-08  
q 2.397437072011849 1.7765e-07 au
tp 2456813.216175887558
(2014-Jun-04.71617589)
0.00013883 TDB
node 19.41580312752555 4.5624e-05 deg
peri 6.852087712311998 5.5794e-05 deg
i 7.705317039373022 7.2787e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      304  
   data-arc span      6705 days (18.36 yr)  
   first obs. used      2001-12-19  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60646  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 15:25:30  

Additional Information
 Jupiter MOID = 2.44847 au 
 T_jup = 3.346 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.484175324189652E-15 -1.182103952954683E-14 -4.4348338385008E-12 4.37690806717291E-14 -1.101901372004505E-12 -1.836816584193713E-15
q -1.182103952954683E-14 3.15586768656055E-14 1.102918004756004E-11 -1.166547394607994E-13 2.778910558972299E-12 5.521564545996565E-15
tp -4.4348338385008E-12 1.102918004756004E-11 1.927332942735729E-8 -6.527783299272597E-11 4.495148861727348E-9 1.185745872663998E-12
node 4.37690806717291E-14 -1.166547394607994E-13 -6.527783299272597E-11 2.081548884643048E-9 -2.077304908928745E-9 -1.141290892443674E-10
peri -1.101901372004505E-12 2.778910558972299E-12 4.495148861727348E-9 -2.077304908928745E-9 3.112971373509228E-9 1.134641347234909E-10
i -1.836816584193713E-15 5.521564545996565E-15 1.185745872663998E-12 -1.141290892443674E-10 1.134641347234909E-10 5.297954703573236E-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 16.1   n/a MPO460147  

266787 (2009 SJ260)          Discovered 2009-Sep-22 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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