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JPL Small-Body Database Browser
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(2018 XZ4)
Classification: Apollo [NEO]          SPK-ID: 3836915
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4734284718596638 0.00027126  
a 1.79493269234271 0.00089567 au
q .9451604507159486 1.526e-05 au
i 7.134885888200063 0.0030968 deg
node 84.76882730832038 0.00044129 deg
peri 319.9448532679114 0.00075009 deg
M 32.92149391323252 0.29414 deg
tp 2459316.175558949147
(2021-Apr-11.67555895)
0.65755 TDB
period 878.3562147732422
2.40
0.65745
0.0018
d
yr
n .40985649551411 0.00030678 deg/d
Q 2.644704933969471 0.0013197 au
  Orbit Determination Parameters
   # obs. used (total)      124  
   data-arc span      26 days  
   first obs. used      2018-12-14  
   last obs. used      2019-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .44993  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:56:08  

Additional Information
 Earth MOID = .0192851 au 
 Jupiter MOID = 2.77807 au 
 T_jup = 3.926 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458470.5 (2018-Dec-18.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4742014335467202 0.0002708  
q .9437929465610319 1.6261e-05 au
tp 2458437.976042795365
(2018-Nov-15.47604280)
0.0022793 TDB
node 84.77515401401541 0.00038969 deg
peri 319.9448204180383 0.00093418 deg
i 7.139292219094387 0.0030925 deg
  Orbit Determination Parameters
   # obs. used (total)      124  
   data-arc span      26 days  
   first obs. used      2018-12-14  
   last obs. used      2019-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .44993  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:56:08  

Additional Information
 Jupiter MOID = 2.77807 au 
 T_jup = 3.926 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.333406379347424E-8 -4.401867526733299E-9 6.168561639876945E-7 -1.054831543552235E-7 -2.51312971791717E-7 8.374468227200655E-7
q -4.401867526733299E-9 2.644074581219643E-10 -3.699266316627561E-8 6.334196810876943E-9 1.513028264556452E-8 -5.026878376433118E-8
tp 6.168561639876945E-7 -3.699266316627561E-8 5.195146515239332E-6 -8.868265049709473E-7 -2.105412288505884E-6 7.043975089721848E-6
node -1.054831543552235E-7 6.334196810876943E-9 -8.868265049709473E-7 1.5185561468685E-7 3.619970201583748E-7 -1.204703860433767E-6
peri -2.51312971791717E-7 1.513028264556452E-8 -2.105412288505884E-6 3.619970201583748E-7 8.726951002581728E-7 -2.870167505114505E-6
i 8.374468227200655E-7 -5.026878376433118E-8 7.043975089721848E-6 -1.204703860433767E-6 -2.870167505114505E-6 9.563637004283397E-6

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 23.3   .65098 E2018Y96 autocmod 2.6q

[ 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
1927-Oct-17 14:13 4_20:46 Earth 0.112571369223376 0.110689763763904 0.11547703754022 8.00901702723036 8.00606115715529 2425171.092684895 7006.12533850078 549237.682753066 72.0776665967152 77.397359178664 179410.141293463 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
1939-Sep-27 05:03 7_05:46 Earth 0.131579559540131 0.121165945726893 0.151477434395075 9.61996013219856 9.61785490884408 2429533.710223042 10425.8451707895 1931543.54301504 55.1738675556442 66.0965306701691 240880.006561275 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
1951-Sep-12 21:01 8_16:17 Earth 0.209810611592486 0.142612076814119 0.297380064404607 13.4174041130883 13.4164575888807 2433902.375924563 12497.0636730534 5077092.19082285 55.3579836377847 37.1670240719044 267917.482409024 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
1963-Sep-02 09:31 9_04:34 Earth 0.342725670895509 0.213535564245866 0.482258394475665 17.9824504257578 17.9820180890903 2438274.896350397 13233.8761492627 7332917.50772096 59.5624113053513 21.9583292854498 266893.26377498 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
1975-Aug-24 02:15 9_16:06 Earth 0.498271778943723 0.333653932256593 0.667173732540415 22.8027566272561 22.8025221174824 2442648.593587814 13926.1226230558 8629565.25992262 67.1703472256019 14.5902983560322 242712.507144494 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
1983-Jan-09 19:19 9_23:41 Earth 0.416015552951807 0.225168158294317 0.606859882033814 21.3846114671185 21.3843119618496 2445344.305126032 14380.7585141517 9516544.90391854 38.1724191499205 -0.119941183128236 2853.4662972756 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2018-Aug-12 22:25 02:39 Mars 0.0922262277967193 0.0918921307385368 0.0925603588882481 10.7844081262798 10.7841202795975 2458343.434085594 159.323324323166 16893.6251354738 340.633735830269 -9.53025939584336 6245.40126137093 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2018-Dec-13 13:41 < 00:01 Earth 0.0306695920929965 0.0306237574583668 0.0307154264904588 9.99201182821308 9.9833134058119 2458466.069858580 0.042006956264553 2281.61834369267 8.09570236094666 0.300948416770537 1477.862086077 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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