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187659 (2007 EN186)
Classification: Jupiter Trojan          SPK-ID: 2187659
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07450907958608993 5.5525e-08  
a 5.141776524551613 1.2874e-07 au
q 4.758667488269908 3.5316e-07 au
i 8.092005944725379 5.5389e-06 deg
node 129.7958107814918 4.819e-05 deg
peri 181.595408193448 7.0863e-05 deg
M 286.4231986643495 5.6314e-05 deg
tp 2460070.875434993995
(2023-May-06.37543499)
0.000681 TDB
period 4258.613461170079
11.66
0.00015994
4.379e-07
d
yr
n .08453455644248302 3.1748e-09 deg/d
Q 5.524885560833318 1.3833e-07 au
  Orbit Determination Parameters
   # obs. used (total)      281  
   data-arc span      7203 days (19.72 yr)  
   first obs. used      2000-08-30  
   last obs. used      2020-05-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54189  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:19  

Additional Information
 Earth MOID = 3.74237 au 
 Jupiter MOID = .174425 au 
 T_jup = 2.975 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457497.5 (2016-Apr-19.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07254068446323229 5.5541e-08  
q 4.777646404210204 3.5484e-07 au
tp 2455808.086055389517
(2011-Sep-03.58605539)
0.00063934 TDB
node 129.7801085550325 4.8196e-05 deg
peri 181.6798565832302 7.1868e-05 deg
i 8.08750398786894 5.5348e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      281  
   data-arc span      7203 days (19.72 yr)  
   first obs. used      2000-08-30  
   last obs. used      2020-05-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54189  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:19  

Additional Information
 Jupiter MOID = .174425 au 
 T_jup = 2.975 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.084831170816738E-15 -1.874398392572951E-14 -2.676830484565879E-13 -4.514994441260237E-15 -5.29079674044955E-14 -2.582297264087989E-16
q -1.874398392572951E-14 1.259106286398078E-13 2.128273906404471E-11 3.074468514469135E-14 2.421910907362472E-12 8.723822417109919E-15
tp -2.676830484565879E-13 2.128273906404471E-11 4.087614512625135E-7 -7.10037142052819E-11 3.41400444787296E-8 3.438399156084855E-11
node -4.514994441260237E-15 3.074468514469135E-14 -7.10037142052819E-11 2.322834251511986E-9 -2.305134751985548E-9 5.721652994329036E-11
peri -5.29079674044955E-14 2.421910907362472E-12 3.41400444787296E-8 -2.305134751985548E-9 5.165029635260741E-9 -5.355672856415866E-11
i -2.582297264087989E-16 8.723822417109919E-15 3.438399156084855E-11 5.721652994329036E-11 -5.355672856415866E-11 3.063376462105061E-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 13.31   n/a E2021B55  

187659 (2007 EN186)          Discovered 2007-Mar-15 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

Alternate Designations
 2007 EN186 = 2006 DM127 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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