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207273 (2005 EL321)
Classification: Main-belt Asteroid          SPK-ID: 2207273
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

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Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0145449958224409 6.0416e-08  
a 2.612175248556453 2.1619e-08 au
q 2.574181170478716 1.6355e-07 au
i 2.33489196938736 6.2766e-06 deg
node 80.31153627790101 0.00015237 deg
peri 30.47958620424937 0.00026189 deg
M 270.525557374814 0.00021479 deg
tp 2459383.764322039162
(2021-Jun-18.26432204)		 0.00092133 TDB
period 1542.062201069916
4.22		 1.9143e-05
5.241e-08		 d
yr
n .2334536179865017 2.8981e-09 deg/d
Q 2.65016932663419 2.1933e-08 au
   Orbit Determination Parameters
   # obs. used (total)      167  
   data-arc span      7633 days (20.90 yr)  
   first obs. used      1999-12-02  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57639  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 04:33:31  

Additional Information
 Earth MOID = 1.59114 au 
 Jupiter MOID = 2.33547 au 
 T_jup = 3.408 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457437.5 (2016-Feb-19.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01333117454515628 6.0155e-08  
q 2.578312690072937 1.6305e-07 au
tp 2457817.230384689362
(2017-Mar-04.73038469)		 0.0010022 TDB
node 80.32232426230431 0.00015245 deg
peri 24.93228064571689 0.00027854 deg
i 2.334988197673943 6.2712e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      167  
   data-arc span      7633 days (20.90 yr)  
   first obs. used      1999-12-02  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57639  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 04:33:31  

Additional Information
 Jupiter MOID = 2.33547 au 
 T_jup = 3.408 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.618649353439452E-15 -9.727330858994675E-15 -8.380895390934266E-13 -2.664299033499353E-14 -9.422771132714198E-14 8.097821534724048E-16
q -9.727330858994675E-15 2.658603755426059E-14 7.2960747009304E-12 6.729382518826797E-14 1.405043356944529E-12 -1.898973997545843E-15
tp -8.380895390934266E-13 7.2960747009304E-12 1.004448847097491E-6 -1.719827789990815E-10 2.336732446718675E-7 1.723802912762768E-11
node -2.664299033499353E-14 6.729382518826797E-14 -1.719827789990815E-10 2.324015281353403E-8 -2.326060583268514E-8 8.791590156009681E-11
peri -9.422771132714198E-14 1.405043356944529E-12 2.336732446718675E-7 -2.326060583268514E-8 7.758526552175867E-8 -8.3827542515393E-11
i 8.097821534724048E-16 -1.898973997545843E-15 1.723802912762768E-11 8.791590156009681E-11 -8.3827542515393E-11 3.932844097896413E-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 16.9   n/a MPO494155  

207273 (2005 EL321)          Discovered 2005-Mar-08 by Lowe, A. at Mayhill
Reference: 20090209/Numbers.arcLast Updated: 2009-02-11

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Alternate Designations
 2005 EL321 = 2007 VD103 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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