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(2018 XO4)
Classification: Apollo [NEO]          SPK-ID: 3836902
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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2444833017368468 0.00012585  
a 1.278291847902275 0.00020235 au
q .9657708363438315 7.9926e-06 au
i 3.141811132088031 0.0014083 deg
node 297.9204302892632 0.00034549 deg
peri 173.4370665869408 0.00051217 deg
M 254.8413900461433 0.1459 deg
tp 2459550.700503487898
(2021-Dec-02.20050349)
0.25056 TDB
period 527.8900251724705
1.45
0.12535
0.0003432
d
yr
n .6819602243523771 0.00016193 deg/d
Q 1.590812859460718 0.00025183 au
  Orbit Determination Parameters
   # obs. used (total)      16  
   data-arc span      109 days  
   first obs. used      2018-12-13  
   last obs. used      2019-04-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .37252  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:56:04  

Additional Information
 Earth MOID = .0140599 au 
 Jupiter MOID = 3.50781 au 
 T_jup = 5.030 
[ 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 25.4   .28803 MPO467279 autocmod 2.6q

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