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13990 (1993 EK)
Classification: Main-belt Asteroid          SPK-ID: 2013990
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1787909452566922 2.9532e-08  
a 2.283610695064709 6.5614e-09 au
q 1.875321780295798 6.8753e-08 au
i 6.925354986791108 4.4192e-06 deg
node 338.958406532039 2.85e-05 deg
peri 125.9523695961024 3.3286e-05 deg
M 11.82111865668162 1.3963e-05 deg
tp 2458959.110745381047
(2020-Apr-19.61074538)
4.8919e-05 TDB
period 1260.467143217531
3.45
5.4325e-06
1.487e-08
d
yr
n .2856083968052083 1.2309e-09 deg/d
Q 2.691899609833621 7.7345e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1518  
   data-arc span      11377 days (31.15 yr)  
   first obs. used      1988-11-09  
   last obs. used      2020-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49043  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:18:54  

Additional Information
 Earth MOID = .901549 au 
 Jupiter MOID = 2.44645 au 
 T_jup = 3.573 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456676.5 (2014-Jan-19.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1780957950895759 2.9555e-08  
q 1.876721514168234 6.8763e-08 au
tp 2456437.727155878875
(2013-May-25.22715588)
5.2378e-05 TDB
node 339.041735940793 2.8477e-05 deg
peri 125.8217897615013 3.3327e-05 deg
i 6.928037209911472 4.4212e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1518  
   data-arc span      11377 days (31.15 yr)  
   first obs. used      1988-11-09  
   last obs. used      2020-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49043  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:18:54  

Additional Information
 Jupiter MOID = 2.44645 au 
 T_jup = 3.573 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.735240468621063E-16 -2.026325344445816E-15 5.28376395633794E-13 -2.264685474175099E-15 1.8947486028747E-13 -1.627405683628687E-16
q -2.026325344445816E-15 4.728367240464388E-15 -1.31129334684055E-12 5.851574300154295E-15 -4.642965424791028E-13 4.282979492404434E-16
tp 5.28376395633794E-13 -1.31129334684055E-12 2.74348353082067E-9 -1.393707853259131E-11 9.142809512572356E-10 5.527579334689229E-12
node -2.264685474175099E-15 5.851574300154295E-15 -1.393707853259131E-11 8.109397130942771E-10 -8.091206751693015E-10 3.596567336017593E-11
peri 1.8947486028747E-13 -4.642965424791028E-13 9.142809512572356E-10 -8.091206751693015E-10 1.110693298465145E-9 -3.388621665196534E-11
i -1.627405683628687E-16 4.282979492404434E-16 5.527579334689229E-12 3.596567336017593E-11 -3.388621665196534E-11 1.954719134911662E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO452367  
diameter diameter 2.747 km 0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.234   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13990 (1993 EK)          Discovered 1993-Mar-02 by Urata, T. at Oohira
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1993 EK = 1998 QT56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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