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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09591037408231134 6.0449e-08  
a 2.431853339483804 1.792e-08 au
q 2.198613375980595 1.4449e-07 au
i 7.787422263976563 4.4604e-06 deg
node 93.77482642006193 4.4754e-05 deg
peri 113.6641618894872 4.9664e-05 deg
M 279.642923290741 2.1841e-05 deg
tp 2458909.690488357156
(2020-Mar-01.19048836)		 8.4084e-05 TDB
period 1385.174528079253
3.79		 1.531e-05
4.192e-08		 d
yr
n .25989504766536 2.8726e-09 deg/d
Q 2.665093302987013 1.9638e-08 au
   Orbit Determination Parameters
   # obs. used (total)      448  
   data-arc span      8454 days (23.15 yr)  
   first obs. used      1995-11-16  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58239  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:08:29  

Additional Information
 Earth MOID = 1.20647 au 
 Jupiter MOID = 2.32714 au 
 T_jup = 3.488 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456847.5 (2014-Jul-09.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09667296568775841 6.0274e-08  
q 2.196164496943826 1.4416e-07 au
tp 2457524.829454460251
(2016-May-16.32945446)		 8.446e-05 TDB
node 93.82043074239385 4.4736e-05 deg
peri 113.7867061482494 4.9592e-05 deg
i 7.789567899061812 4.4612e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      448  
   data-arc span      8454 days (23.15 yr)  
   first obs. used      1995-11-16  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58239  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:08:29  

Additional Information
 Jupiter MOID = 2.32714 au 
 T_jup = 3.488 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.632990519756402E-15 -8.636871806244942E-15 -7.040473467894463E-13 1.420620646208556E-14 -1.480051130019118E-13 -8.190380369030247E-15
q -8.636871806244942E-15 2.078176785786952E-14 1.50800952939604E-12 -3.420470632670942E-14 2.814023083320156E-13 2.013128049817829E-14
tp -7.040473467894463E-13 1.50800952939604E-12 7.133437001533359E-9 4.165549201862951E-11 1.85018775964401E-9 2.429190830977725E-12
node 1.420620646208556E-14 -3.420470632670942E-14 4.165549201862951E-11 2.001337902030147E-9 -1.971224235189125E-9 -4.845090405201538E-11
peri -1.480051130019118E-13 2.814023083320156E-13 1.85018775964401E-9 -1.971224235189125E-9 2.459341845755352E-9 4.846810300277293E-11
i -8.190380369030247E-15 2.013128049817829E-14 2.429190830977725E-12 -4.845090405201538E-11 4.846810300277293E-11 1.990249766099195E-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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