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JPL Small-Body Database Browser
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(2018 SM2)
Classification: Apollo [NEO]          SPK-ID: 3830885
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 2458391.5 (2018-Sep-30.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5974367950829998 0.0034623  
a 2.276367553326575 0.018666 au
q .9163818178362162 0.00036764 au
i 2.258325699004681 0.0092257 deg
node 209.7559062128096 0.01917 deg
peri 199.4319087293012 0.012634 deg
M 349.9688000635015 0.1316 deg
tp 2458426.455248405242
(2018-Nov-03.95524841)
0.028845 TDB
period 1254.474988590418
3.43
15.43
0.04225
d
yr
n .2869726405661635 0.0035298 deg/d
Q 3.636353288816934 0.029818 au
  Orbit Determination Parameters
   # obs. used (total)      24  
   data-arc span      3 days  
   first obs. used      2018-09-29  
   last obs. used      2018-10-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .33661  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:42:03  

Additional Information
 Earth MOID = .013173 au 
 Jupiter MOID = 1.76657 au 
 T_jup = 3.346 
[ 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 23.0   .52445 E2018T04 autocmod 2.6n

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