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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 ]

[ 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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6027470867662953 0.00047929  
a 2.5541357396848 0.003123 au
q 1.01463786338411 1.6453e-05 au
i 9.046879957157003 0.0049652 deg
node 218.0911447157741 0.00011098 deg
peri 189.9855367215563 0.0010053 deg
M 144.8129594100049 0.26521 deg
tp 2458796.751298684023
(2019-Nov-09.25129868)
0.0016259 TDB
period 1490.954492977753
4.08
2.7346
0.007487
d
yr
n .2414560616675855 0.00044286 deg/d
Q 4.09363361598549 0.0050054 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .42853  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 22:00:21  

Additional Information
 Earth MOID = .0267379 au 
 Jupiter MOID = 1.31957 au 
 T_jup = 3.141 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458782.5 (2019-Oct-26.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6030790790149881 0.00047857  
q 1.015705498750088 1.7555e-05 au
tp 2458796.638443632596
(2019-Nov-09.13844363)
0.0016821 TDB
node 218.1189926340322 0.00010875 deg
peri 189.9223646203251 0.00084063 deg
i 9.049044314387345 0.0049478 deg
  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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .42853  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 22:00:21  

Additional Information
 Jupiter MOID = 1.31957 au 
 T_jup = 3.141 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.290328008265297E-7 8.400745250073499E-9 -8.040310171881615E-7 5.192910571236181E-8 -3.993092238240953E-7 2.367881282120343E-6
q 8.400745250073499E-9 3.081810803284206E-10 -2.95092578533525E-8 1.9046018439653E-9 -1.466849481983961E-8 8.685162815004855E-8
tp -8.040310171881615E-7 -2.95092578533525E-8 2.829550528545343E-6 -1.822393826948444E-7 1.410313219627661E-6 -8.3123501148161E-6
node 5.192910571236181E-8 1.9046018439653E-9 -1.822393826948444E-7 1.182740213730361E-8 -9.051694633067456E-8 5.368382536449929E-7
peri -3.993092238240953E-7 -1.466849481983961E-8 1.410313219627661E-6 -9.051694633067456E-8 7.066635446562619E-7 -4.128006597301049E-6
i 2.367881282120343E-6 8.685162815004855E-8 -8.3123501148161E-6 5.368382536449929E-7 -4.128006597301049E-6 2.448073651693024E-5

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 26.2   .29604 E2019-VB2 autocmod 2.8

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