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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1787272398863828 3.829e-08  
a 2.28316769151231 7.7509e-09 au
q 1.875103431810551 8.6345e-08 au
i 6.925607511817739 5.9455e-06 deg
node 338.9649690804515 2.8908e-05 deg
peri 126.0183061994959 3.3673e-05 deg
M 257.4963203228352 1.4917e-05 deg
tp 2458959.291460050380
(2020-Apr-19.79146005)
5.2274e-05 TDB
period 1260.100379078502
3.45
6.4167e-06
1.757e-08
d
yr
n .2856915258316677 1.4548e-09 deg/d
Q 2.69123195121407 9.1362e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1291  
   data-arc span      11265 days (30.84 yr)  
   first obs. used      1988-11-09  
   last obs. used      2019-09-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5178  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:16:32  

Additional Information
 Earth MOID = .901532 au 
 Jupiter MOID = 2.44806 au 
 T_jup = 3.573 
[ 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 15.0   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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