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JPL Small-Body Database Browser
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52686 (1998 EN11)
Classification: Main-belt Asteroid          SPK-ID: 2052686
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1597753647753178 3.6004e-08  
a 3.156175594417805 2.4035e-08 au
q 2.651896487524745 1.1909e-07 au
i 26.66073715813245 5.9964e-06 deg
node 159.6955493194975 9.0914e-06 deg
peri 77.06267195118359 2.0976e-05 deg
M 298.7006179233911 1.9338e-05 deg
tp 2459349.233572380987
(2021-May-14.73357238)		 0.00011159 TDB
period 2048.048149983901
5.61		 2.3395e-05
6.405e-08		 d
yr
n .1757771173508932 2.0079e-09 deg/d
Q 3.660454701310865 2.7876e-08 au
   Orbit Determination Parameters
   # obs. used (total)      734  
   data-arc span      9387 days (25.70 yr)  
   first obs. used      1994-08-10  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57385  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 10:25:26  

Additional Information
 Earth MOID = 1.78261 au 
 Jupiter MOID = 1.68242 au 
 T_jup = 3.023 
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[ 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 14.2   n/a MPO337679  
diameter diameter 9.162 km 0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52686 (1998 EN11)          Discovered 1998-Mar-01 by Elst, E. W. at La Silla
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 EN11 = 1994 PY15 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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