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JPL Small-Body Database Browser
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185487 (2007 ED139)
Classification: Jupiter Trojan          SPK-ID: 2185487
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06033278195842403 6.6461e-08  
a 5.224789242487302 1.7655e-07 au
q 4.909563172341596 3.7975e-07 au
i 5.321326801021224 7.6209e-06 deg
node 49.82820755322108 8.1983e-05 deg
peri 239.4566886276098 0.00011679 deg
M 288.2016688155917 9.1705e-05 deg
tp 2459870.488357890872
(2022-Oct-17.98835789)
0.0011347 TDB
period 4362.160006703987
11.94
0.00022111
6.054e-07
d
yr
n .0825279218200923 4.1831e-09 deg/d
Q 5.540015312633008 1.8721e-07 au
  Orbit Determination Parameters
   # obs. used (total)      235  
   data-arc span      9565 days (26.19 yr)  
   first obs. used      1993-01-23  
   last obs. used      2019-04-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50686  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 09:01:29  

Additional Information
 Earth MOID = 3.89726 au 
 Jupiter MOID = .27307 au 
 T_jup = 2.988 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456782.5 (2014-May-05.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05818134691241313 6.6499e-08  
q 4.934031149979717 3.809e-07 au
tp 2455507.622780799678
(2010-Nov-07.12278080)
0.0010667 TDB
node 49.83098104114165 8.1961e-05 deg
peri 239.9754045195785 0.00011875 deg
i 5.318404171054279 7.6159e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      235  
   data-arc span      9565 days (26.19 yr)  
   first obs. used      1993-01-23  
   last obs. used      2019-04-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50686  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 09:01:29  

Additional Information
 Jupiter MOID = .27307 au 
 T_jup = 2.988 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.422174636913596E-15 -2.266712045057308E-14 9.697131223146902E-12 -4.026776006829433E-15 7.291697948858684E-13 1.574625872120918E-15
q -2.266712045057308E-14 1.450837564454373E-13 1.894281431838071E-11 4.743062873706595E-14 2.518327284565539E-12 4.400708865804405E-16
tp 9.697131223146902E-12 1.894281431838071E-11 1.137952470236916E-6 1.672666106299328E-10 9.170732763629035E-8 3.431719815147224E-11
node -4.026776006829433E-15 4.743062873706595E-14 1.672666106299328E-10 6.717591106470925E-9 -6.67436940917837E-9 -3.42863120519845E-11
peri 7.291697948858684E-13 2.518327284565539E-12 9.170732763629035E-8 -6.67436940917837E-9 1.410070391357714E-8 3.709592142022228E-11
i 1.574625872120918E-15 4.400708865804405E-16 3.431719815147224E-11 -3.42863120519845E-11 3.709592142022228E-11 5.800219939841281E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2   n/a MPO433217  

185487 (2007 ED139)          Discovered 2007-Mar-12 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 2007 ED139 = 2001 TO226 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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