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JPL Small-Body Database Browser
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(2019 UL8)
Classification: Apollo [NEO]          SPK-ID: 3883108
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4847201277991234 7.8084e-06  
a 1.494854284316797 1.5678e-05 au
q .7702683245816919 3.697e-06 au
i .7892919177623688 2.8034e-05 deg
node 216.2806946588096 8.1052e-05 deg
peri 256.7820510279903 0.00023891 deg
M 86.64291614409802 0.0012656 deg
tp 2458839.832780539605
(2019-Dec-22.33278054)
0.00018552 TDB
period 667.5698554460787
1.83
0.010503
2.876e-05
d
yr
n .5392694068839334 8.484e-06 deg/d
Q 2.219440244051902 2.3278e-05 au
  Orbit Determination Parameters
   # obs. used (total)      54  
   # delay obs. used      1  
   # Doppler obs. used      1  
   data-arc span      8 days  
   first obs. used      2019-10-25  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .34819  
   source      ORB  
   producer      Giorgini  
   solution date      2019-Dec-12 20:23:39  

Additional Information
 Earth MOID = .00122344 au 
 Jupiter MOID = 2.91219 au 
 T_jup = 4.418 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458786.5 (2019-Oct-30.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4867679751527607 7.7732e-06  
q .7719937930503518 3.7332e-06 au
tp 2458839.591486786305
(2019-Dec-22.09148679)
0.00017543 TDB
node 216.3902887506355 7.7299e-05 deg
peri 256.2274296670249 0.00025087 deg
i .8045979215414377 2.8295e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      54  
   # delay obs. used      1  
   # Doppler obs. used      1  
   data-arc span      8 days  
   first obs. used      2019-10-25  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .34819  
   source      ORB  
   producer      Giorgini  
   solution date      2019-Dec-12 20:23:39  

Additional Information
 Jupiter MOID = 2.91219 au 
 T_jup = 4.418 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.042321366372595E-11 -2.848273743704125E-11 -1.292471947174331E-9 8.024749160862185E-11 1.561032252231224E-9 5.171464764563133E-11
q -2.848273743704125E-11 1.393712596408786E-11 5.692912017195324E-10 -3.834527373675281E-11 -8.28307635391341E-10 -2.467988770222263E-11
tp -1.292471947174331E-9 5.692912017195324E-10 3.077449382149531E-8 -1.675273252299483E-9 -2.615668228882565E-8 -1.085165249587277E-9
node 8.024749160862185E-11 -3.834527373675281E-11 -1.675273252299483E-9 5.97517464858428E-9 -3.70036727971268E-9 1.516430101503789E-9
peri 1.561032252231224E-9 -8.28307635391341E-10 -2.615668228882565E-8 -3.70036727971268E-9 6.293359992442577E-8 -5.925770443206271E-11
i 5.171464764563133E-11 -2.467988770222263E-11 -1.085165249587277E-9 1.516430101503789E-9 -5.925770443206271E-11 8.005927363110222E-10

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   .26317 E2019X95 autocmod 2.8

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