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20201 (1997 EK6)
Classification: Main-belt Asteroid          SPK-ID: 2020201
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1670803242283944 4.0362e-08  
a 2.594480860324481 1.0781e-08 au
q 2.160994156977103 1.0652e-07 au
i 15.58752316929023 4.1137e-06 deg
node 85.30414312110229 1.5067e-05 deg
peri 277.0878407224366 2.0147e-05 deg
M 27.7691873973907 1.1836e-05 deg
tp 2459082.757079403886
(2020-Aug-21.25707940)
5.0396e-05 TDB
period 1526.420302042537
4.18
9.5141e-06
2.605e-08
d
yr
n .2358459197104992 1.47e-09 deg/d
Q 3.027967563671859 1.2582e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1921  
   data-arc span      8756 days (23.97 yr)  
   first obs. used      1997-03-06  
   last obs. used      2021-02-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4714  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:14:58  

Additional Information
 Earth MOID = 1.22325 au 
 Jupiter MOID = 2.58943 au 
 T_jup = 3.347 
[ show covariance matrix ]

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 14.1   n/a MPO474031  
diameter diameter 4.549 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.196   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20201 (1997 EK6)          Discovered 1997-Mar-06 by Klet at Klet
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 EK6 = 1998 HD126 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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