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(2020 UN3)
Classification: Apollo [NEO]          SPK-ID: 54075985
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1938166433130215 9.3207e-05  
a 1.039689777624874 5.7835e-05 au
q .8381805948387595 5.0282e-05 au
i 10.65756577752303 0.0058141 deg
node 41.63482068491676 0.00011341 deg
peri 99.28851371693806 0.0037724 deg
M 323.1865612785299 0.011228 deg
tp 2459240.096607033473
(2021-Jan-25.59660703)
0.0087733 TDB
period 387.2167074611418
1.06
0.03231
8.846e-05
d
yr
n .9297119495705823 7.7576e-05 deg/d
Q 1.241198960410989 6.9044e-05 au
  Orbit Determination Parameters
   # obs. used (total)      194  
   data-arc span      33 days  
   first obs. used      2020-10-20  
   last obs. used      2020-11-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .37104  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-12 05:24:38  

Additional Information
 Earth MOID = .0285647 au 
 Jupiter MOID = 3.77512 au 
 T_jup = 5.867 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459153.5 (2020-Oct-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1933939591096722 9.3634e-05  
q .8384190451125381 5.0461e-05 au
tp 2459240.163764297603
(2021-Jan-25.66376430)
0.0088967 TDB
node 41.67654687629702 4.709e-05 deg
peri 99.28896323603085 0.0038118 deg
i 10.69093383854422 0.0057792 deg
  Orbit Determination Parameters
   # obs. used (total)      194  
   data-arc span      33 days  
   first obs. used      2020-10-20  
   last obs. used      2020-11-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .37104  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-12 05:24:38  

Additional Information
 Jupiter MOID = 3.77512 au 
 T_jup = 5.867 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.767287197614101E-9 -4.724818804440763E-9 -8.330175180618219E-7 4.381175499148716E-9 -3.568527108317309E-7 5.411226202387535E-7
q -4.724818804440763E-9 2.546322019057658E-9 4.489154983494137E-7 -2.361245039812998E-9 1.922976076298217E-7 -2.916180795387961E-7
tp -8.330175180618219E-7 4.489154983494137E-7 7.915079877798794E-5 -4.162828108855705E-7 3.390952588950613E-5 -5.141435841881731E-5
node 4.381175499148716E-9 -2.361245039812998E-9 -4.162828108855705E-7 2.217438699083455E-9 -1.783388569123988E-7 2.703806177843066E-7
peri -3.568527108317309E-7 1.922976076298217E-7 3.390952588950613E-5 -1.783388569123988E-7 1.453019748028425E-5 -2.202523908597916E-5
i 5.411226202387535E-7 -2.916180795387961E-7 -5.141435841881731E-5 2.703806177843066E-7 -2.202523908597916E-5 3.339865336736437E-5

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 24.3   .52044 E2021-CQ9 autocmod 2.8

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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