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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 | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1489780328114671 4.9419e-08  
a 2.610002204232484 1.5662e-08 au
q 2.221169210212335 1.3288e-07 au
i 15.43741616887549 5.5771e-06 deg
node 55.18019681470052 1.9808e-05 deg
peri 269.8634615887317 2.6919e-05 deg
M 42.35386026326614 2.0211e-05 deg
tp 2458819.303319705414
(2019-Dec-01.80331971)
8.5979e-05 TDB
period 1540.138360484372
4.22
1.3863e-05
3.795e-08
d
yr
n .2337452330495687 2.1039e-09 deg/d
Q 2.998835198252633 1.7995e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2140  
   data-arc span      12047 days (32.98 yr)  
   first obs. used      1986-11-06  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38939  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 01:31:46  

Additional Information
 Earth MOID = 1.27431 au 
 Jupiter MOID = 2.41169 au 
 T_jup = 3.344 
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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 13.2   n/a MPO395208  
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

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