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(2020 UN4)
Classification: Apollo [NEO]          SPK-ID: 54076021
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4948953188320235 0.00052569  
a 1.89081012816366 0.0019125 au
q .9550570469352863 4.1519e-05 au
i 2.155932711788881 0.0020303 deg
node 213.9588760098873 0.00085726 deg
peri 142.8204265606956 0.01011 deg
M 30.82029780403225 0.048567 deg
tp 2459119.197362074832
(2020-Sep-26.69736207)
0.0080249 TDB
period 949.6647254729361
2.60
1.4408
0.003945
d
yr
n .3790811539522213 0.00057514 deg/d
Q 2.826563209392034 0.002859 au
  Orbit Determination Parameters
   # obs. used (total)      29  
   data-arc span      1 day  
   first obs. used      2020-10-23  
   last obs. used      2020-10-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .62918  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:13:33  

Additional Information
 Earth MOID = .00524431 au 
 Jupiter MOID = 2.63079 au 
 T_jup = 3.799 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459146.5 (2020-Oct-24.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4954693841848991 0.00052476  
q .9548018250101261 4.1178e-05 au
tp 2459119.171128976917
(2020-Sep-26.67112898)
0.0080628 TDB
node 213.9644200887732 0.00085593 deg
peri 142.7657378893327 0.010083 deg
i 2.155698699134762 0.0020311 deg
  Orbit Determination Parameters
   # obs. used (total)      29  
   data-arc span      1 day  
   first obs. used      2020-10-23  
   last obs. used      2020-10-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .62918  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:13:33  

Additional Information
 Jupiter MOID = 2.63079 au 
 T_jup = 3.799 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.753728861806405E-7 -1.465333625680242E-8 2.349554426469705E-6 -8.925762940662955E-9 -4.725421577406879E-7 1.0214642870647E-6
q -1.465333625680242E-8 1.695622524199676E-9 7.789795943011626E-8 -2.482738261060406E-8 3.290127188468667E-7 -3.708437463645725E-8
tp 2.349554426469705E-6 7.789795943011626E-8 6.500917319174946E-5 -5.682184183030492E-6 6.329587125664393E-5 1.2540948644845E-5
node -8.925762940662955E-9 -2.482738261060406E-8 -5.682184183030492E-6 7.326187107848156E-7 -8.412685106925538E-6 -5.284264260599253E-7
peri -4.725421577406879E-7 3.290127188468667E-7 6.329587125664393E-5 -8.412685106925538E-6 .000101662951251887 3.994161331860647E-6
i 1.0214642870647E-6 -3.708437463645725E-8 1.2540948644845E-5 -5.284264260599253E-7 3.994161331860647E-6 4.12520121792186E-6

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 28.00   .34702 E2020-UK5 autocmod 2.8

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