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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1489897473862054 1.772e-08  
a 2.610513870696968 1.1195e-08 au
q 2.221574068553641 4.5083e-08 au
i 15.43604842347565 4.6991e-07 deg
node 55.18086818025229 3.8228e-06 deg
peri 269.9379339474937 6.4475e-06 deg
M 89.02516416908412 5.5084e-06 deg
tp 2458819.523912857809
(2019-Dec-02.02391286)
2.2609e-05 TDB
period 1540.591277211229
4.22
9.9103e-06
2.713e-08
d
yr
n .2336765145468501 1.5032e-09 deg/d
Q 2.999453672840295 1.2863e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2594  
   data-arc span      12536 days (34.32 yr)  
   first obs. used      1986-11-06  
   last obs. used      2021-03-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37072  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 02:57:01  

Additional Information
 Earth MOID = 1.27297 au 
 Jupiter MOID = 2.41083 au 
 T_jup = 3.344 
[ 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 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

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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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