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227911 (2007 EC197)
Classification: Main-belt Asteroid          SPK-ID: 2227911
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09622083354085613 8.4023e-08  
a 2.568217361208192 2.2632e-08 au
q 2.321101345998641 2.1766e-07 au
i 5.463968456046713 1.0484e-05 deg
node 198.621322681347 4.4302e-05 deg
peri 239.1616579988631 0.00010592 deg
M 232.6771966490294 8.796e-05 deg
tp 2459732.179339652657
(2022-Jun-01.67933965)
0.00036777 TDB
period 1503.30150795802
4.12
1.9871e-05
5.44e-08
d
yr
n .239472918835157 3.1655e-09 deg/d
Q 2.815333376417742 2.481e-08 au
  Orbit Determination Parameters
   # obs. used (total)      286  
   data-arc span      5824 days (15.95 yr)  
   first obs. used      2003-04-25  
   last obs. used      2019-04-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51597  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:38  

Additional Information
 Earth MOID = 1.34136 au 
 Jupiter MOID = 2.40364 au 
 T_jup = 3.418 
[ 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 16.5   n/a MPO437079  

227911 (2007 EC197)          Discovered 2007-Mar-15 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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