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JPL Small-Body Database Browser
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(2019 UL4)
Classification: Apollo [NEO]          SPK-ID: 3879532
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2458779.5 (2019-Oct-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4556374413731161 0.00096651  
a 1.806546213242332 0.0032164 au
q .9834161189183039 6.4333e-06 au
i 8.765813622206309 0.013727 deg
node 225.6515775801556 0.0030296 deg
peri 208.1649322251742 0.003099 deg
M 344.3377076549896 0.045635 deg
tp 2458818.085565162526
(2019-Nov-30.58556516)
0.0094076 TDB
period 886.8946609168997
2.43
2.3685
0.006485
d
yr
n .405910663198514 0.001084 deg/d
Q 2.62967630756636 0.0046819 au
  Orbit Determination Parameters
   # obs. used (total)      24  
   data-arc span      10 days  
   first obs. used      2019-10-21  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .51226  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Oct-31 07:11:41  

Additional Information
 Earth MOID = .0231999 au 
 Jupiter MOID = 2.69039 au 
 T_jup = 3.917 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 9.341326017500445E-7 4.662289470766506E-9 -9.062154341903347E-6 2.917392075666329E-6 -2.731413924480646E-6 1.326644405768044E-5
q 4.662289470766506E-9 4.138740102010756E-11 -4.848688676235228E-8 1.558924674129442E-8 -1.902734575690059E-8 6.56805043621588E-8
tp -9.062154341903347E-6 -4.848688676235228E-8 8.850376800476054E-5 -2.848554876612054E-5 2.747147646030273E-5 -.0001286024242417015
node 2.917392075666329E-6 1.558924674129442E-8 -2.848554876612054E-5 9.178434042580297E-6 -8.843894028458073E-6 4.139809221102268E-5
peri -2.731413924480646E-6 -1.902734575690059E-8 2.747147646030273E-5 -8.843894028458073E-6 9.604026232113314E-6 -3.8626970899397E-5
i 1.326644405768044E-5 6.56805043621588E-8 -.0001286024242417015 4.139809221102268E-5 -3.8626970899397E-5 .0001884271901286413

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 25.3   .55697 MPO502115 autocmod 2.8

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