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(2018 XZ4)
Classification: Apollo [NEO]          SPK-ID: 3836915
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4735033378765697 0.00027126  
a 1.795161845500165 0.00089514 au
q .9451467196271739 1.5682e-05 au
i 7.135033056581774 0.0030937 deg
node 84.77206314674109 0.00035958 deg
peri 319.9309639213212 0.0011238 deg
M 312.6030919175274 0.23388 deg
tp 2459316.164837332658
(2021-Apr-11.66483733)
0.65725 TDB
period 878.5244254182734
2.41
0.6571
0.001799
d
yr
n .4097780204899832 0.0003065 deg/d
Q 2.645176971373156 0.001319 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 = .0191472 au 
 Jupiter MOID = 2.77657 au 
 T_jup = 3.925 
[ 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 23.3   .65098 E2018Y96 autocmod 2.6q

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