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541957 (2012 EF20)
Classification: Main-belt Asteroid          SPK-ID: 2541957
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .26442895922021 4.8913e-08  
a 2.693423916739609 3.5462e-08 au
q 1.981204633697333 1.4709e-07 au
i 11.944047931996 7.7508e-06 deg
node 12.87848429372535 2.3928e-05 deg
peri 74.61172193839673 3.2825e-05 deg
M 51.73190268950619 1.9795e-05 deg
tp 2458968.487466545087
(2020-Apr-28.98746655)
8.559e-05 TDB
period 1614.564856527335
4.42
3.1886e-05
8.73e-08
d
yr
n .2229702935404535 4.4035e-09 deg/d
Q 3.405643199781886 4.4839e-08 au
  Orbit Determination Parameters
   # obs. used (total)      120  
   data-arc span      5260 days (14.40 yr)  
   first obs. used      2006-11-20  
   last obs. used      2021-04-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53889  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 13:25:52  

Additional Information
 Earth MOID = 1.03486 au 
 Jupiter MOID = 2.02336 au 
 T_jup = 3.290 
[ 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 17.3   .39337 MPO535745 autocmod 2.6n

541957 (2012 EF20)          Discovered 2012-Mar-13 by Mount Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2019-12-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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