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243861 (2000 WJ131)
Classification: Main-belt Asteroid          SPK-ID: 2243861
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2569003170828708 5.9931e-08  
a 2.555314916069169 2.0722e-08 au
q 1.89885370388441 1.553e-07 au
i 6.92765835521206 9.2248e-06 deg
node 70.59130217132585 0.00011708 deg
peri 14.54939318579638 0.00012544 deg
M 263.7531193643869 4.7128e-05 deg
tp 2459399.386404389039
(2021-Jul-03.88640439)
0.00019873 TDB
period 1491.987113054756
4.08
1.8149e-05
4.969e-08
d
yr
n .2412889473709468 2.935e-09 deg/d
Q 3.211776128253928 2.6045e-08 au
  Orbit Determination Parameters
   # obs. used (total)      166  
   data-arc span      6372 days (17.45 yr)  
   first obs. used      2000-11-01  
   last obs. used      2018-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67286  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 14:17:02  

Additional Information
 Earth MOID = .915844 au 
 Jupiter MOID = 2.04281 au 
 T_jup = 3.381 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456818.5 (2014-Jun-10.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2568214530994012 6.2656e-08  
q 1.898725311309094 1.6469e-07 au
tp 2456409.755441297476
(2013-Apr-27.25544130)
0.00017144 TDB
node 70.66201440980288 0.00011678 deg
peri 13.68438809264673 0.00012529 deg
i 6.938637835201066 9.2983e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      166  
   data-arc span      6372 days (17.45 yr)  
   first obs. used      2000-11-01  
   last obs. used      2018-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67286  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 14:17:02  

Additional Information
 Jupiter MOID = 2.04281 au 
 T_jup = 3.381 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.925822304616009E-15 -1.02674352360864E-14 -6.377091842466897E-12 6.098106087165834E-15 -1.771115564387159E-12 5.602902694760046E-16
q -1.02674352360864E-14 2.712389675322647E-14 1.834951069186328E-11 -3.035216033880099E-14 5.093762613659428E-12 -2.173299004216157E-16
tp -6.377091842466897E-12 1.834951069186328E-11 2.939185152566995E-8 -8.666179646278512E-11 8.0900878250883E-9 7.713138906212678E-12
node 6.098106087165834E-15 -3.035216033880099E-14 -8.666179646278512E-11 1.363847840377257E-8 -1.356380360004886E-8 -8.02176881700725E-10
peri -1.771115564387159E-12 5.093762613659428E-12 8.0900878250883E-9 -1.356380360004886E-8 1.569861138516273E-8 7.985920892445962E-10
i 5.602902694760046E-16 -2.173299004216157E-16 7.713138906212678E-12 -8.02176881700725E-10 7.985920892445962E-10 8.645762317071177E-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 16.7   n/a MPO446288  

243861 (2000 WJ131)          Discovered 2000-Nov-20 by LONEOS at Anderson Mesa
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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