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21346 Marieladislav (1997 EL11)
Classification: Main-belt Asteroid          SPK-ID: 2021346
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1489465288333842 1.7711e-08  
a 2.610967400674341 1.1199e-08 au
q 2.222072869446774 4.505e-08 au
i 15.43438820966267 4.6975e-07 deg
node 55.17617067180547 3.8227e-06 deg
peri 270.0112040785702 6.4284e-06 deg
M 134.7442454435187 5.639e-06 deg
tp 2458819.722477770666
(2019-Dec-02.22247777)
2.259e-05 TDB
period 1540.992769814407
4.22
9.9146e-06
2.714e-08
d
yr
n .2336156321118609 1.5031e-09 deg/d
Q 2.999861931901908 1.2867e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2657  
   data-arc span      12606 days (34.51 yr)  
   first obs. used      1986-11-06  
   last obs. used      2021-05-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37306  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:32:42  

Additional Information
 Earth MOID = 1.2746 au 
 Jupiter MOID = 2.40973 au 
 T_jup = 3.343 
[ 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 13.35   n/a E2021B10  
diameter diameter 6.334 km 0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.278   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21346 Marieladislav           Discovered 1997 Mar. 9 by P. Pravec at Ondřejov.
Marie Pravcová (b. 1948) and Ladislav Pravec (b. 1945), the parents of the discoverer, established a nice family environment in which the discoverer's interest in science flourished. This naming is on the occasion of the 35th anniversary of their marriage.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020128/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1997 EL11 = 1986 VD6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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