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216680 (2004 EC17)
Classification: Main-belt Asteroid          SPK-ID: 2216680
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1948641525287669 4.0194e-08  
a 2.759130008875762 2.0989e-08 au
q 2.221474477979498 1.0982e-07 au
i 16.09116346584921 5.5184e-06 deg
node 154.5544951091175 1.6884e-05 deg
peri 89.57759777940257 2.2402e-05 deg
M 192.0593217542961 1.6878e-05 deg
tp 2459981.426348075341
(2023-Feb-05.92634808)
8.3682e-05 TDB
period 1674.004703588331
4.58
1.9101e-05
5.23e-08
d
yr
n .2150531591866606 2.4538e-09 deg/d
Q 3.296785539772026 2.5078e-08 au
  Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      6166 days (16.88 yr)  
   first obs. used      2004-02-25  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52271  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:55:50  

Additional Information
 Earth MOID = 1.27788 au 
 Jupiter MOID = 1.97782 au 
 T_jup = 3.258 
[ 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 15.71   n/a MPCxxxxx  

216680 (2004 EC17)          Discovered 2004-Mar-12 by NEAT at Palomar
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

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