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541267 (2011 EP20)
Classification: Main-belt Asteroid          SPK-ID: 2541267
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06973627414889123 9.8679e-08  
a 2.169497726780654 1.3786e-08 au
q 2.018205038540482 2.1311e-07 au
i 6.357567884002525 1.2096e-05 deg
node 73.3945129403548 5.6808e-05 deg
peri 142.1249406151756 8.5729e-05 deg
M 333.7080893246064 6.1885e-05 deg
tp 2459285.742636430518
(2021-Mar-12.24263643)
0.00020073 TDB
period 1167.17835739898
3.20
1.1125e-05
3.046e-08
d
yr
n .3084361509257664 2.9399e-09 deg/d
Q 2.320790415020826 1.4747e-08 au
  Orbit Determination Parameters
   # obs. used (total)      95  
   data-arc span      6360 days (17.41 yr)  
   first obs. used      2003-11-19  
   last obs. used      2021-04-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .64497  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 13:25:12  

Additional Information
 Earth MOID = 1.01271 au 
 Jupiter MOID = 2.64883 au 
 T_jup = 3.679 
[ 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 18.0   .49207 MPO535738 autocmod 2.8

541267 (2011 EP20)          Discovered 2005-May-18 by NEAT at Palomar
Reference: Last Updated: 2019-12-13

Alternate Designations
 2011 EP20 = 2013 YW87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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