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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457277.5 (2015-Sep-12.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1069198049691328 5.3903e-08  
q 2.739336928659484 1.5915e-07 au
tp 2456315.039785767602
(2013-Jan-22.53978577)
0.0002499 TDB
node 15.19034435152764 3.2066e-05 deg
peri 132.3971682884005 5.8249e-05 deg
i 11.79346663243483 8.0694e-06 deg
  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
 Jupiter MOID = 1.62782 au 
 T_jup = 3.191 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.905512906755086E-15 -8.440899185610064E-15 1.826615113052709E-12 -1.359025345726447E-14 4.209820789028404E-13 -1.018056300059108E-14
q -8.440899185610064E-15 2.53277667135229E-14 -6.75437044303853E-12 2.43143103892373E-14 -1.415065368007838E-12 2.933442496881173E-14
tp 1.826615113052709E-12 -6.75437044303853E-12 6.245215994002227E-8 1.519616242408342E-10 1.21735254942825E-8 1.316214105978106E-11
node -1.359025345726447E-14 2.43143103892373E-14 1.519616242408342E-10 1.028224841286953E-9 -9.783454534894263E-10 8.678642985324127E-11
peri 4.209820789028404E-13 -1.415065368007838E-12 1.21735254942825E-8 -9.783454534894263E-10 3.392986132992949E-9 -8.259041238742554E-11
i -1.018056300059108E-14 2.933442496881173E-14 1.316214105978106E-11 8.678642985324127E-11 -8.259041238742554E-11 6.51149688792684E-11

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

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