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146784 (2001 XE245)
Classification: Main-belt Asteroid          SPK-ID: 2146784
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07677130618575942 5.1303e-08  
a 2.767785889225168 2.3461e-08 au
q 2.555299351266838 1.4043e-07 au
i 13.39223672795602 4.835e-06 deg
node 246.0794297367082 2.2963e-05 deg
peri 38.97688535490354 4.2668e-05 deg
M 123.3231924600077 3.504e-05 deg
tp 2458424.344885879524
(2018-Nov-01.84488588)
0.00016295 TDB
period 1681.88835324413
4.60
2.1384e-05
5.855e-08
d
yr
n .2140451233315278 2.7215e-09 deg/d
Q 2.980272427183498 2.5262e-08 au
  Orbit Determination Parameters
   # obs. used (total)      366  
   data-arc span      6679 days (18.29 yr)  
   first obs. used      2001-10-21  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56153  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 08:39:29  

Additional Information
 Earth MOID = 1.55229 au 
 Jupiter MOID = 2.12102 au 
 T_jup = 3.295 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457234.5 (2015-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07823196257553354 5.0942e-08  
q 2.550874259051778 1.3968e-07 au
tp 2456745.745753685959
(2014-Mar-29.24575369)
0.00016023 TDB
node 246.1208572827933 2.2997e-05 deg
peri 39.61262471895232 4.2286e-05 deg
i 13.38228326811373 4.8326e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      366  
   data-arc span      6679 days (18.29 yr)  
   first obs. used      2001-10-21  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56153  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 08:39:29  

Additional Information
 Jupiter MOID = 2.12102 au 
 T_jup = 3.295 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.595106728970469E-15 -7.030895086844587E-15 -1.865158828973039E-13 1.017004288285168E-14 -1.626363298989886E-13 -6.245254229728877E-15
q -7.030895086844587E-15 1.950942537669491E-14 3.019650149722393E-13 -2.725902567964302E-14 4.253849236507787E-13 1.813088012575099E-14
tp -1.865158828973039E-13 3.019650149722393E-13 2.567273434658401E-8 -2.721776012417419E-11 5.704766050614615E-9 -2.587858384398479E-11
node 1.017004288285168E-14 -2.725902567964302E-14 -2.721776012417419E-11 5.288595643841561E-10 -5.204817727248363E-10 -7.140577715608237E-12
peri -1.626363298989886E-13 4.253849236507787E-13 5.704766050614615E-9 -5.204817727248363E-10 1.788069561726037E-9 1.521454863072204E-12
i -6.245254229728877E-15 1.813088012575099E-14 -2.587858384398479E-11 -7.140577715608237E-12 1.521454863072204E-12 2.335440264123548E-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 15.7   n/a MPO449801  

146784 (2001 XE245)          Discovered 2001-Dec-15 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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