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392952 (2012 WT20)
Classification: Main-belt Asteroid          SPK-ID: 2392952
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .04205827815784201 6.074e-08  
a 3.01957335556075 5.4605e-08 au
q 2.892575299454568 1.8144e-07 au
i 10.0192468319417 6.8582e-06 deg
node 46.20535833787525 3.9805e-05 deg
peri 84.63548057821306 9.3193e-05 deg
M 93.4566950965484 8.5846e-05 deg
tp 2458502.963757511167
(2019-Jan-19.46375751)
0.00045356 TDB
period 1916.53521570543
5.25
5.1987e-05
1.423e-07
d
yr
n .1878389695372713 5.0952e-09 deg/d
Q 3.146571411666933 5.6901e-08 au
  Orbit Determination Parameters
   # obs. used (total)      140  
   data-arc span      5818 days (15.93 yr)  
   first obs. used      2004-05-24  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65931  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 01:25:17  

Additional Information
 Earth MOID = 1.92972 au 
 Jupiter MOID = 1.90009 au 
 T_jup = 3.222 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457748.5 (2016-Dec-26.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0430228936462409 6.0668e-08  
q 2.891070970559203 1.8174e-07 au
tp 2458501.848293299115
(2019-Jan-18.34829330)
0.00044424 TDB
node 46.21465142433682 3.9799e-05 deg
peri 84.42497205128664 9.1552e-05 deg
i 10.01916606561505 6.8581e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      140  
   data-arc span      5818 days (15.93 yr)  
   first obs. used      2004-05-24  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65931  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 01:25:17  

Additional Information
 Jupiter MOID = 1.90009 au 
 T_jup = 3.222 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.680624751650895E-15 -1.056943934808787E-14 5.3648974682683E-12 -7.218319043318875E-15 9.494773129680087E-13 8.200455202151854E-16
q -1.056943934808787E-14 3.302772926125153E-14 -1.050589448848593E-11 2.07148854069762E-14 -2.000930776387938E-12 1.965037113493618E-15
tp 5.3648974682683E-12 -1.050589448848593E-11 1.973488349121186E-7 2.84546851816519E-11 3.6658507694189E-8 -1.312685844598755E-12
node -7.218319043318875E-15 2.07148854069762E-14 2.84546851816519E-11 1.583979406840665E-9 -1.553779139323682E-9 -5.050255690811624E-11
peri 9.494773129680087E-13 -2.000930776387938E-12 3.6658507694189E-8 -1.553779139323682E-9 8.381852141986079E-9 4.920845397050782E-11
i 8.200455202151854E-16 1.965037113493618E-15 -1.312685844598755E-12 -5.050255690811624E-11 4.920845397050782E-11 4.703371781841101E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO472034  

392952 (2012 WT20)          Discovered 2009-Mar-18 by CSS at Catalina
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Alternate Designations
 2012 WT20 = 2014 DB13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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