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JPL Small-Body Database Browser
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(2009 UK20)
Classification: Apollo [NEO]          SPK-ID: 3472549
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2072180474933113 0.00018233  
a 1.053823441361025 4.9424e-05 au
q .8354522054395115 0.00015296 au
i 2.843335080911832 0.0023305 deg
node 215.9534880866384 0.00021366 deg
peri 277.4959875458145 0.006975 deg
M 209.1520518040233 0.27436 deg
tp 2459562.072084222604
(2021-Dec-13.57208422)
0.31279 TDB
period 395.1392845111778
1.08
0.027798
7.611e-05
d
yr
n .911071144053297 6.4094e-05 deg/d
Q 1.272194677282539 5.9666e-05 au
  Orbit Determination Parameters
   # obs. used (total)      37  
   data-arc span      15 days  
   first obs. used      2009-10-25  
   last obs. used      2009-11-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .68543  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 03:04:40  

Additional Information
 Earth MOID = .00609622 au 
 Jupiter MOID = 3.75036 au 
 T_jup = 5.817 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455133.5 (2009-Oct-29.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2067891688012641 0.00018251  
q .8357766118782677 0.00012038 au
tp 2455216.302796508566
(2010-Jan-19.80279651)
0.010369 TDB
node 216.6280201148932 0.00011736 deg
peri 278.1783712169404 0.0021546 deg
i 2.931236875056862 0.0028702 deg
  Orbit Determination Parameters
   # obs. used (total)      37  
   data-arc span      15 days  
   first obs. used      2009-10-25  
   last obs. used      2009-11-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .68543  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 03:04:40  

Additional Information
 Jupiter MOID = 3.75036 au 
 T_jup = 5.817 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.330851106371615E-8 -2.197063654705001E-8 -1.892223678697783E-6 -2.056383256670397E-8 3.907634831736921E-7 5.238089765253224E-7
q -2.197063654705001E-8 1.449240111908317E-8 1.248037068578472E-6 1.357130273046068E-8 -2.578899916632884E-7 -3.455221024744364E-7
tp -1.892223678697783E-6 1.248037068578472E-6 .0001075217241838401 1.165953110403503E-6 -2.216007485201059E-5 -2.975319342116949E-5
node -2.056383256670397E-8 1.357130273046068E-8 1.165953110403503E-6 1.377312114849105E-8 -2.453390108908665E-7 -3.236100547420601E-7
peri 3.907634831736921E-7 -2.578899916632884E-7 -2.216007485201059E-5 -2.453390108908665E-7 4.642388275785695E-6 6.150537922120396E-6
i 5.238089765253224E-7 -3.455221024744364E-7 -2.975319342116949E-5 -3.236100547420601E-7 6.150537922120396E-6 8.238289851475683E-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 26.3   n/a MPO166376  

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