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JPL Small-Body Database Browser
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(2019 UM4)
Classification: Apollo [NEO]          SPK-ID: 3879531
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6027384246200329 0.00047891  
a 2.557328170688177 0.003127 au
q 1.015928217851154 1.7512e-05 au
i 9.045040781748412 0.0049535 deg
node 218.1328910711225 8.9542e-05 deg
peri 189.8857118126481 0.00079785 deg
M 312.7321352011121 0.087097 deg
tp 2458796.628905520172
(2019-Nov-09.12890552)
0.0016635 TDB
period 1493.750696962372
4.09
2.7398
0.007501
d
yr
n .2410040716513677 0.00044204 deg/d
Q 4.098728123525198 0.0050118 au
  Orbit Determination Parameters
   # obs. used (total)      45  
   data-arc span      12 days  
   first obs. used      2019-10-22  
   last obs. used      2019-11-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .42855  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:14:33  

Additional Information
 Earth MOID = .0279478 au 
 Jupiter MOID = 1.3105 au 
 T_jup = 3.140 
[ show covariance matrix ]

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 26.218   .29604 7 autocmod 2.8

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