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(2018 SM1)
Classification: Apollo [NEO]          SPK-ID: 3830857
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3804348556304461 2.0688e-05  
a 1.621013182730351 5.4392e-05 au
q 1.00432326658328 1.6438e-07 au
i 2.906556213825254 0.00011335 deg
node 200.8456427813755 0.00017627 deg
peri 174.5752751881737 0.00028031 deg
M 287.5513358324838 0.014393 deg
tp 2459152.207177494799
(2020-Oct-29.70717749)
0.037774 TDB
period 753.8383837119152
2.06
0.037942
0.0001039
d
yr
n .4775559427305265 2.4036e-05 deg/d
Q 2.237703098877422 7.5084e-05 au
  Orbit Determination Parameters
   # obs. used (total)      331  
   data-arc span      124 days  
   first obs. used      2018-08-14  
   last obs. used      2018-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      5  
   norm. resid. RMS      .39804  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 09:06:15  

Additional Information
 Earth MOID = .0073662 au 
 Jupiter MOID = 3.22628 au 
 T_jup = 4.241 
[ 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 22.9   .5433 E2018W48 autocmod 2.6n

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