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442185 (2011 EY9)
Classification: Main-belt Asteroid          SPK-ID: 2442185
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05631197076529564 7.7457e-08  
a 2.193040964118886 5.2981e-08 au
q 2.069546505460328 1.6706e-07 au
i 7.263309984973461 1.282e-05 deg
node 348.3232509679171 6.1328e-05 deg
peri 224.1900884632713 0.00017213 deg
M 270.4641080858789 0.00017342 deg
tp 2459295.527980377714
(2021-Mar-22.02798038)		 0.00057908 TDB
period 1186.229015709691
3.25		 4.2986e-05
1.177e-07		 d
yr
n .3034827130616267 1.0998e-08 deg/d
Q 2.316535422777445 5.5964e-08 au
   Orbit Determination Parameters
   # obs. used (total)      70  
   data-arc span      3720 days (10.18 yr)  
   first obs. used      2009-09-25  
   last obs. used      2019-12-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59647  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:48:27  

Additional Information
 Earth MOID = 1.07159 au 
 Jupiter MOID = 2.6583 au 
 T_jup = 3.659 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.6   n/a MPO349187  

442185 (2011 EY9)          Discovered 2009-Sep-25 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 EY9 = 2014 CD6 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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