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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05656262057774694 8.283e-08  
a 2.192663912455924 5.5015e-08 au
q 2.068641095521162 1.7438e-07 au
i 7.263701448663234 1.3381e-05 deg
node 348.3338398080853 6.2298e-05 deg
peri 224.1428852188481 0.00017279 deg
M 149.109552831556 0.00016993 deg
tp 2458109.298711612731
(2017-Dec-21.79871161)
0.00054789 TDB
period 1185.92310459933
3.25
4.4633e-05
1.222e-07
d
yr
n .3035609970021014 1.1425e-08 deg/d
Q 2.316686729390687 5.8126e-08 au
  Orbit Determination Parameters
   # obs. used (total)      67  
   data-arc span      2603 days (7.13 yr)  
   first obs. used      2009-09-25  
   last obs. used      2016-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59372  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:31:06  

Additional Information
 Earth MOID = 1.07091 au 
 Jupiter MOID = 2.65934 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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