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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.


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 
[ 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 26.2   .29604 E2019-VB2 autocmod 2.8

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1923-Apr-17 21:21 3_17:48 Jupiter 1.36225000254797 1.35979197787837 1.36490946419805 3.90406873830091 3.74141533950384 2423527.389483826 5388.09213999046 854105.029244188 92.7955236028174 -83.3768980393527 480189.350922012 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 22:00:21 2021-Apr-15 22:00
2017-Nov-15 14:29 1_07:39 Jupiter 1.80940345176343 1.80481635984224 1.81398833753848 4.82403332031088 4.72599750603786 2458073.103178028 1898.81615749617 225966.623381646 591.907628191196 -55.0061312230727 173300.654298595 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 22:00:21 2021-Apr-15 22:00
2019-Nov-01 19:14 < 00:01 Earth 0.0284911327299288 0.0284328824052155 0.0285493825227485 9.15298984098719 9.14276674913548 2458789.301565967 0.0559751670945531 2898.19387743721 5.68796291166131 -0.0690418042510817 917.617993570979 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 22:00:21 2021-Apr-15 22:00
2023-Dec-30 21:12 8_18:04 Earth 0.447301386030041 0.309663052576376 0.587671406429202 20.7822738537147 20.7819872234502 2460309.383643421 12604.4154073778 7147711.57202107 21.3411822945931 13.4174677532703 646923.391304513 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 22:00:21 2021-Apr-15 22:00
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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