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(2018 XF4)
Classification: Apollo [NEO]          SPK-ID: 3836893
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 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2296712611896124 0.0002781  
a 1.265925744172219 0.00046982 au
q .9751789819357868 9.9751e-06 au
i 25.84179422699873 0.015121 deg
node 81.63682161899985 9.5023e-05 deg
peri 327.64324771012 0.01476 deg
M 168.1174879793398 0.30513 deg
tp 2458957.547615410551
(2020-Apr-18.04761541)
0.30571 TDB
period 520.2484256899568
1.42
0.28962
0.0007929
d
yr
n .6919771059807931 0.00038522 deg/d
Q 1.556672506408651 0.00057772 au
  Orbit Determination Parameters
   # obs. used (total)      85  
   data-arc span      5 days  
   first obs. used      2018-12-13  
   last obs. used      2018-12-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .47705  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:56:04  

Additional Information
 Earth MOID = .01927 au 
 Jupiter MOID = 3.78747 au 
 T_jup = 4.974 
[ 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 25.1   .47412 E2018Y62 autocmod 2.6q

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