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JPL Small-Body Database Browser
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305507 (2008 EK117)
Classification: Main-belt Asteroid          SPK-ID: 2305507
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .106712299579508 5.4069e-08  
a 3.066639197093908 3.3061e-08 au
q 2.739391076391361 1.595e-07 au
i 11.79194848998428 8.0696e-06 deg
node 15.18025102840038 3.2075e-05 deg
peri 132.9695126690804 5.8294e-05 deg
M 58.83997161089565 4.5316e-05 deg
tp 2458279.900822182601
(2018-Jun-10.40082218)
0.00024708 TDB
period 1961.518689667271
5.37
3.172e-05
8.684e-08
d
yr
n .1835312617189827 2.9679e-09 deg/d
Q 3.393887317796455 3.6589e-08 au
  Orbit Determination Parameters
   # obs. used (total)      148  
   data-arc span      6823 days (18.68 yr)  
   first obs. used      2000-09-24  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65853  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:54:49  

Additional Information
 Earth MOID = 1.76499 au 
 Jupiter MOID = 1.62782 au 
 T_jup = 3.191 
[ 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 16.4   n/a MPO258184  

305507 (2008 EK117)          Discovered 2008-Mar-08 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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Alternate Designations
 2008 EK117 = 2005 SE197 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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