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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .651587944175817 0.00082078  
a 2.492215102384391 0.0044923 au
q .8683177873778225 0.0004804 au
i .5251231565408196 0.0019225 deg
node 175.7537609701973 0.070094 deg
peri 237.5246780323934 0.061188 deg
M 111.1845128710331 2.4353 deg
tp 2458756.668104714338
(2019-Sep-30.16810471)		 8.5212 TDB
period 1437.065992169002
3.93		 3.8855
0.01064		 d
yr
n .2505104163356078 0.00067733 deg/d
Q 4.11611241739096 0.0074194 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 = .00136555 au 
 Jupiter MOID = 1.27925 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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