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JPL Small-Body Database Browser
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52557 (1997 EK41)
Classification: Main-belt Asteroid          SPK-ID: 2052557
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .11972302696216 3.6292e-08  
a 2.254966363238581 9.3801e-09 au
q 1.984994964533805 7.9958e-08 au
i 3.362960655575828 3.9695e-06 deg
node 239.7168261070156 6.6064e-05 deg
peri 8.991102060153267 6.8441e-05 deg
M 232.0994211193158 1.9758e-05 deg
tp 2459439.918703342629
(2021-Aug-13.41870334)
6.887e-05 TDB
period 1236.825779740366
3.39
7.7173e-06
2.113e-08
d
yr
n .2910676716938832 1.8162e-09 deg/d
Q 2.524937761943358 1.0503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      957  
   data-arc span      9458 days (25.89 yr)  
   first obs. used      1994-03-10  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54975  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:30:42  

Additional Information
 Earth MOID = .971183 au 
 Jupiter MOID = 2.49486 au 
 T_jup = 3.612 
[ 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 15.7   n/a MPO452884  

52557 (1997 EK41)          Discovered 1997-Mar-10 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 EK41 = 1998 QS40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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