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20371 Ekladyous (1998 KE30)
Classification: Main-belt Asteroid          SPK-ID: 2020371
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07012384743556282 3.7162e-08  
a 2.754692919709125 1.4639e-08 au
q 2.561523253675617 1.0343e-07 au
i 6.202237613495382 3.5415e-06 deg
node 250.06083385 4.0997e-05 deg
peri 60.77425604317042 5.0514e-05 deg
M 228.6300597446215 3.1297e-05 deg
tp 2459609.898972538299
(2022-Jan-30.39897254)
0.00014626 TDB
period 1669.96825672078
4.57
1.3311e-05
3.644e-08
d
yr
n .2155729598758429 1.7183e-09 deg/d
Q 2.947862585742632 1.5665e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1359  
   data-arc span      14065 days (38.51 yr)  
   first obs. used      1981-10-24  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53131  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:11:44  

Additional Information
 Earth MOID = 1.55389 au 
 Jupiter MOID = 2.22182 au 
 T_jup = 3.332 
[ 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 14.4   n/a MPO337430  
diameter diameter 7.900 km 0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 184.408 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.065   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20371 Ekladyous           Discovered 1998 May 22 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Nicholas Samir Ekladyous (b. 1991) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his engineering project. He attends the Imlay City Middle School, Imlay City, Michigan.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041028/MPCPages.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1998 KE30 = 1981 UW28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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