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(2018 XM2)
Classification: Apollo [NEO]          SPK-ID: 3836849
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2411354899764913 0.0005719  
a 1.248762953161468 0.00096381 au
q .947641886586387 1.7284e-05 au
i 22.48122179495364 0.033737 deg
node 257.4041513234492 0.0018865 deg
peri 228.5918343960275 0.039297 deg
M 130.2978776679549 0.53799 deg
tp 2459016.018306324163
(2020-Jun-15.51830632)
0.54813 TDB
period 509.7044626662786
1.40
0.5901
0.001616
d
yr
n .7062916383286694 0.00081769 deg/d
Q 1.549884019736549 0.0011962 au
  Orbit Determination Parameters
   # obs. used (total)      44  
   data-arc span      4 days  
   first obs. used      2018-12-10  
   last obs. used      2018-12-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .47005  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:55:57  

Additional Information
 Earth MOID = .0273991 au 
 Jupiter MOID = 3.64341 au 
 T_jup = 5.045 
[ 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   .5228 E2018Y42 autocmod 2.6q

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