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85358 (1995 WJ12)
Classification: Main-belt Asteroid          SPK-ID: 2085358
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09588708132496368 5.6894e-08  
a 2.431627134688448 1.4884e-08 au
q 2.198465505872588 1.3273e-07 au
i 7.787379537289165 4.0947e-06 deg
node 93.77509834615599 3.7787e-05 deg
peri 113.814945242767 4.3372e-05 deg
M 23.47816560217822 1.905e-05 deg
tp 2458910.175501435658
(2020-Mar-01.67550144)
7.3539e-05 TDB
period 1384.981264470942
3.79
1.2716e-05
3.481e-08
d
yr
n .2599313140438176 2.3865e-09 deg/d
Q 2.664788763504308 1.6311e-08 au
  Orbit Determination Parameters
   # obs. used (total)      611  
   data-arc span      8974 days (24.57 yr)  
   first obs. used      1995-11-16  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53776  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:16:38  

Additional Information
 Earth MOID = 1.20606 au 
 Jupiter MOID = 2.32653 au 
 T_jup = 3.488 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457570.5 (2016-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09628401696847325 5.6888e-08  
q 2.197535632957449 1.3279e-07 au
tp 2457523.432223007325
(2016-May-14.93222301)
7.7994e-05 TDB
node 93.78712838237445 3.7793e-05 deg
peri 113.378972270033 4.3333e-05 deg
i 7.786892575972591 4.0945e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      611  
   data-arc span      8974 days (24.57 yr)  
   first obs. used      1995-11-16  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53776  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:16:38  

Additional Information
 Jupiter MOID = 2.32653 au 
 T_jup = 3.488 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.236221892538833E-15 -7.523481872921417E-15 -4.880211331773893E-14 -1.778303358697626E-14 1.124312743680174E-14 -9.632907195045896E-15
q -7.523481872921417E-15 1.763268789510174E-14 -3.427613262006233E-13 4.052247542442883E-14 -1.473479501848725E-13 2.271891009020592E-14
tp -4.880211331773893E-14 -3.427613262006233E-13 6.083141984675173E-9 7.483048504250704E-12 1.686995881006581E-9 -1.941660915927041E-12
node -1.778303358697626E-14 4.052247542442883E-14 7.483048504250704E-12 1.428340226887242E-9 -1.412903445773776E-9 -7.8321595071563E-11
peri 1.124312743680174E-14 -1.473479501848725E-13 1.686995881006581E-9 -1.412903445773776E-9 1.877770738506893E-9 7.708375536956257E-11
i -9.632907195045896E-15 2.271891009020592E-14 -1.941660915927041E-12 -7.8321595071563E-11 7.708375536956257E-11 1.676506179752283E-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 16.0   n/a MPO426528  

85358 (1995 WJ12)          Discovered 1995-Nov-16 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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