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(2011 SM173)
Classification: Apollo [NEO]          SPK-ID: 3580056
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6515147654566917 0.00082179  
a 2.492616894258591 0.0044959 au
q .8686401830223176 0.00048166 au
i .5250022740168285 0.0019213 deg
node 175.7482748378123 0.070347 deg
peri 237.5441420649205 0.061361 deg
M 61.06903351891091 2.2992 deg
tp 2458756.662625011336
(2019-Sep-30.16262501)
8.5207 TDB
period 1437.413529210941
3.94
3.8889
0.01065
d
yr
n .2504498480667702 0.0006776 deg/d
Q 4.116593605494864 0.007425 au
  Orbit Determination Parameters
   # obs. used (total)      32  
   data-arc span      1 day  
   first obs. used      2011-09-29  
   last obs. used      2011-09-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .57588  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:52:37  

Additional Information
 Earth MOID = .00144859 au 
 Jupiter MOID = 1.2777 au 
 T_jup = 3.138 
[ 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 27.8   n/a MPO208021  

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