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523654 (2011 SR5)
Classification: Apollo [NEO, PHA]          SPK-ID: 2523654
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7058803083099197 1.3129e-07  
a 1.17825910411016 7.5369e-09 au
q .3465492044319104 1.5377e-07 au
i 29.11385294441193 3.0056e-05 deg
node 180.1411495841555 4.9223e-06 deg
peri 305.5155603253698 1.4255e-05 deg
M 243.8419301653167 2.013e-05 deg
tp 2459151.232367032395
(2020-Oct-28.73236703)
2.7498e-05 TDB
period 467.1535280234119
1.28
4.4823e-06
1.227e-08
d
yr
n .7706245985622915 7.3942e-09 deg/d
Q 2.009969003788409 1.2857e-08 au
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      3266 days (8.94 yr)  
   first obs. used      2011-09-19  
   last obs. used      2020-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37595  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-29 07:51:29  

Additional Information
 Earth MOID = .000321481 au 
 Jupiter MOID = 3.30157 au 
 T_jup = 5.005 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 20.7   n/a MPO266938  

523654 (2011 SR5)          Discovered 2011-Sep-19 by CSS at Catalina
Reference: Last Updated: 2018-10-01

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