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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04098448488546607 5.6805e-08  
a 3.023441082522527 4.9446e-08 au
q 2.899526907173786 1.6184e-07 au
i 10.01231045557053 6.2912e-06 deg
node 46.1540565206145 3.4215e-05 deg
peri 85.81078847072867 8.9243e-05 deg
M 166.6671904440306 8.5552e-05 deg
tp 2458507.507073274042
(2019-Jan-24.00707327)
0.00044793 TDB
period 1920.218687125577
5.26
4.7106e-05
1.29e-07
d
yr
n .1874786462675732 4.5991e-09 deg/d
Q 3.147355257871269 5.1473e-08 au
  Orbit Determination Parameters
   # obs. used (total)      167  
   data-arc span      6252 days (17.12 yr)  
   first obs. used      2004-05-24  
   last obs. used      2021-07-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .66322  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 16:34:31  

Additional Information
 Earth MOID = 1.93703 au 
 Jupiter MOID = 1.89356 au 
 T_jup = 3.221 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458020.5 (2017-Sep-24.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04285662729639156 5.6602e-08  
q 2.891787659564531 1.6231e-07 au
tp 2458502.034744315020
(2019-Jan-18.53474431)
0.00042978 TDB
node 46.21228902505705 3.4184e-05 deg
peri 84.43180807498396 8.615e-05 deg
i 10.01956138506235 6.2948e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      167  
   data-arc span      6252 days (17.12 yr)  
   first obs. used      2004-05-24  
   last obs. used      2021-07-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .66322  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 16:34:31  

Additional Information
 Jupiter MOID = 1.89356 au 
 T_jup = 3.221 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.203801736010411E-15 -8.822513340621046E-15 5.669277697412319E-12 -6.377771288587859E-15 9.585785010028108E-13 2.44455513562393E-15
q -8.822513340621046E-15 2.634456126766276E-14 -9.730623547081303E-12 1.881292445228968E-14 -1.640004151574221E-12 -3.825316811598642E-15
tp 5.669277697412319E-12 -9.730623547081303E-12 1.847121234797879E-7 5.375195282218452E-11 3.401560941824574E-8 4.669021942656523E-12
node -6.377771288587859E-15 1.881292445228968E-14 5.375195282218452E-11 1.16853264398602E-9 -1.140085084417698E-9 -2.200465242377481E-11
peri 9.585785010028108E-13 -1.640004151574221E-12 3.401560941824574E-8 -1.140085084417698E-9 7.421783921908524E-9 2.238883087967573E-11
i 2.44455513562393E-15 -3.825316811598642E-15 4.669021942656523E-12 -2.200465242377481E-11 2.238883087967573E-11 3.962490667889406E-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 16.25   n/a E2021B25  

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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