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(2018 XO4)
Classification: Apollo [NEO]          SPK-ID: 3836902
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2446334235442691 0.00013622  
a 1.27821300880392 0.00021823 au
q .9655193844413962 9.2771e-06 au
i 3.142208074106421 0.0015251 deg
node 297.9219037813942 0.00035049 deg
peri 173.4117275523751 0.0006596 deg
M 344.8100872585665 0.088613 deg
tp 2459022.771837793364
(2020-Jun-22.27183779)
0.13563 TDB
period 527.8411892216235
1.45
0.13518
0.0003701
d
yr
n .6820233194208867 0.00017467 deg/d
Q 1.590906633166444 0.00027162 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .31363  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Apr-02 06:57:50  

Additional Information
 Earth MOID = .0146218 au 
 Jupiter MOID = 3.50836 au 
 T_jup = 5.031 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458469.5 (2018-Dec-17.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .245832509941093 0.00013473  
q .9655637523688122 8.9097e-06 au
tp 2458495.355654374318
(2019-Jan-11.85565437)
0.0004808 TDB
node 298.3192764888423 0.00048953 deg
peri 173.5405907389688 0.00041919 deg
i 3.090715471136911 0.0015802 deg
  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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .31363  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Apr-02 06:57:50  

Additional Information
 Jupiter MOID = 3.50836 au 
 T_jup = 5.031 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.815148809751825E-8 -1.200335108150756E-9 -6.438560344320237E-8 -5.462217557973302E-8 4.51358453463193E-8 2.128855982488216E-7
q -1.200335108150756E-9 7.938353825095574E-11 4.253799835290141E-9 3.603599069347487E-9 -2.980508672004365E-9 -1.407774824524421E-8
tp -6.438560344320237E-8 4.253799835290141E-9 2.311734087337826E-7 2.017882837561167E-7 -1.652998977859814E-7 -7.552107810252037E-7
node -5.462217557973302E-8 3.603599069347487E-9 2.017882837561167E-7 2.396359069170922E-7 -2.037236886030984E-7 -6.435236299731472E-7
peri 4.51358453463193E-8 -2.980508672004365E-9 -1.652998977859814E-7 -2.037236886030984E-7 1.757176023695E-7 5.321841232639663E-7
i 2.128855982488216E-7 -1.407774824524421E-8 -7.552107810252037E-7 -6.435236299731472E-7 5.321841232639663E-7 2.496967935540838E-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 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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