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308203 (2005 EC46)
Classification: Main-belt Asteroid          SPK-ID: 2308203
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1566132077854451 4.204e-08  
a 2.380620685076514 1.5191e-08 au
q 2.007784043066297 9.5427e-08 au
i 1.478592948122159 4.1247e-06 deg
node 275.8446416116238 0.00022256 deg
peri 195.314637492318 0.00022385 deg
M 89.49142122795975 2.4342e-05 deg
tp 2458666.987100865022
(2019-Jul-02.48710087)
8.8757e-05 TDB
period 1341.632997231699
3.67
1.2841e-05
3.516e-08
d
yr
n .2683297151626542 2.5683e-09 deg/d
Q 2.75345732708673 1.757e-08 au
  Orbit Determination Parameters
   # obs. used (total)      262  
   data-arc span      7071 days (19.36 yr)  
   first obs. used      2001-01-03  
   last obs. used      2020-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56748  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:02:02  

Additional Information
 Earth MOID = 1.02447 au 
 Jupiter MOID = 2.35335 au 
 T_jup = 3.521 
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Orbital Elements at Epoch 2457409.5 (2016-Jan-22.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1566348385682553 4.2268e-08  
q 2.008331033956888 9.6056e-08 au
tp 2457326.390471636904
(2015-Oct-30.89047164)
8.1572e-05 TDB
node 275.9341302480594 0.0002226 deg
peri 195.5995704579268 0.00022387 deg
i 1.478203381957137 4.1254e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      262  
   data-arc span      7071 days (19.36 yr)  
   first obs. used      2001-01-03  
   last obs. used      2020-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56748  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:02:02  

Additional Information
 Jupiter MOID = 2.35335 au 
 T_jup = 3.521 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.786564414098524E-15 -4.030667654898172E-15 1.329669250340875E-12 1.198086913148886E-14 3.469356663222257E-13 -5.770988268556303E-16
q -4.030667654898172E-15 9.226759089021066E-15 -2.668957740563584E-12 -2.414284310389281E-14 -6.844218398768507E-13 1.259213563154806E-15
tp 1.329669250340875E-12 -2.668957740563584E-12 6.653972560966148E-9 1.782373631898648E-11 1.982393861024917E-9 -1.750902883576498E-12
node 1.198086913148886E-14 -2.414284310389281E-14 1.782373631898648E-11 4.954994839892653E-8 -4.952793704730465E-8 1.410307730280547E-10
peri 3.469356663222257E-13 -6.844218398768507E-13 1.982393861024917E-9 -4.952793704730465E-8 5.011974988734733E-8 -1.415017863374195E-10
i -5.770988268556303E-16 1.259213563154806E-15 -1.750902883576498E-12 1.410307730280547E-10 -1.415017863374195E-10 1.701908135356379E-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 17.2   n/a MPO471232  

308203 (2005 EC46)          Discovered 2005-Mar-03 by CSS at Catalina
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

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