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117637 (2005 EJ131)
Classification: Main-belt Asteroid          SPK-ID: 2117637
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08391289669660723 4.2475e-08  
a 2.739236434514078 1.8931e-08 au
q 2.509379170557116 1.1305e-07 au
i 9.762658036664163 4.676e-06 deg
node 90.65502375456846 2.6411e-05 deg
peri 55.10778293924162 3.8351e-05 deg
M 181.450295311011 2.9184e-05 deg
tp 2460021.795307914766
(2023-Mar-18.29530791)
0.00013599 TDB
period 1655.932791176155
4.53
1.7167e-05
4.7e-08
d
yr
n .2174001275403839 2.2537e-09 deg/d
Q 2.969093698471041 2.052e-08 au
  Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      9435 days (25.83 yr)  
   first obs. used      1994-11-11  
   last obs. used      2020-09-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56942  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:17:17  

Additional Information
 Earth MOID = 1.53699 au 
 Jupiter MOID = 2.09905 au 
 T_jup = 3.325 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457623.5 (2016-Aug-23.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08300028670033063 4.2152e-08  
q 2.511273381941397 1.1206e-07 au
tp 2458357.938195895673
(2018-Aug-27.43819590)
0.00013554 TDB
node 90.69809030582469 2.6372e-05 deg
peri 53.48550843737279 3.8775e-05 deg
i 9.77026137068602 4.6794e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      9435 days (25.83 yr)  
   first obs. used      1994-11-11  
   last obs. used      2020-09-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56942  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:17:17  

Additional Information
 Jupiter MOID = 2.09905 au 
 T_jup = 3.325 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.776756398172438E-15 -4.672857655196719E-15 4.142800821088686E-13 -1.113605099215321E-14 6.287562118604381E-14 9.111596878921746E-16
q -4.672857655196719E-15 1.255846710989826E-14 -7.808621654137947E-13 2.834091925786662E-14 -1.261444499927959E-13 -2.114037617719746E-15
tp 4.142800821088686E-13 -7.808621654137947E-13 1.837205373279822E-8 -2.278269718330607E-13 3.868668230509333E-9 -1.337586516146108E-12
node -1.113605099215321E-14 2.834091925786662E-14 -2.278269718330607E-13 6.954795340920619E-10 -6.849926873809796E-10 1.089692720904837E-12
peri 6.287562118604381E-14 -1.261444499927959E-13 3.868668230509333E-9 -6.849926873809796E-10 1.50352993136031E-9 -1.435941364404184E-12
i 9.111596878921746E-16 -2.114037617719746E-15 -1.337586516146108E-12 1.089692720904837E-12 -1.435941364404184E-12 2.189649912584739E-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 15.44   n/a E2021B55  

117637 (2005 EJ131)          Discovered 2005-Mar-09 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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