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12203 (1981 EO19)
Classification: Main-belt Asteroid          SPK-ID: 2012203
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07109265989962783 3.1201e-08  
a 2.980634204703651 1.6108e-08 au
q 2.768732990903456 9.6143e-08 au
i 8.762458035927823 4.788e-06 deg
node 181.1603773930191 2.2101e-05 deg
peri 260.7312571719697 3.9671e-05 deg
M 306.7163156725911 3.248e-05 deg
tp 2459278.697481633338
(2021-Mar-05.19748163)
0.00016949 TDB
period 1879.58274004871
5.15
1.5237e-05
4.172e-08
d
yr
n .1915318715847915 1.5526e-09 deg/d
Q 3.192535418503845 1.7253e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1108  
   data-arc span      24491 days (67.05 yr)  
   first obs. used      1953-10-10  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5048  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:54:35  

Additional Information
 Earth MOID = 1.80148 au 
 Jupiter MOID = 2.00135 au 
 T_jup = 3.238 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO412272  

12203 (1981 EO19)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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