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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.

Note: If the applet is not working, here are some notes that might help.
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
0.00092133 TDB
period 1542.062201069916
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 
[ show covariance matrix ]

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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2023-Jul-21 23:21 < 00:01 Eunom 0.0379097556565785 0.0379041338048212 0.0379153776226007 5.35379646228074 5.35379639311659 2460147.473003725 0.717287610601802 299.593736504614 59.406508608373 -21.1840444354756 38726.6338178426 T 10 CATAB v2.0f-lin.ifort 2020-Nov-12 04:33:32 2020-Nov-12 04:33

Alternate Designations
 2005 EL321 = 2007 VD103 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Dec-02 07:20 UT
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