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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05631203701117288 8.2759e-08  
a 2.193040942793012 5.5217e-08 au
q 2.069546340055434 1.7416e-07 au
i 7.263304895533232 1.3381e-05 deg
node 348.3232162422502 6.2298e-05 deg
peri 224.1901371287837 0.00017348 deg
M 270.4641031763077 0.00017368 deg
tp 2459295.527992251719
(2021-Mar-22.02799225)
0.00057977 TDB
period 1186.228998406751
3.25
4.48e-05
1.227e-07
d
yr
n .3034827174883799 1.1462e-08 deg/d
Q 2.31653554553059 5.8326e-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 = 1.07159 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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