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18676 Zdenkaplavcova (1998 FE73)
Classification: Main-belt Asteroid          SPK-ID: 2018676
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07898348112313168 3.4484e-08  
a 2.613830029636276 1.0907e-08 au
q 2.407380634831424 9.1747e-08 au
i 4.899029714882259 3.9328e-06 deg
node 77.8381470494909 4.7746e-05 deg
peri 2.09398040110964 5.5825e-05 deg
M 214.9652950487483 3.0207e-05 deg
tp 2459822.347477008907
(2022-Aug-30.84747701)
0.00013136 TDB
period 1543.52774943384
4.23
9.6616e-06
2.645e-08
d
yr
n .2332319585002905 1.4599e-09 deg/d
Q 2.820279424441127 1.1769e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1409  
   data-arc span      16355 days (44.78 yr)  
   first obs. used      1975-11-06  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50134  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:34:43  

Additional Information
 Earth MOID = 1.42261 au 
 Jupiter MOID = 2.35053 au 
 T_jup = 3.399 
[ 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 14.72   n/a E2021B10  
diameter diameter 2.827 km 0.587 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.384   0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18676 Zdeňkaplavcová           Discovered 1998 Mar. 30 by P. Pravec at Ondřejov.
Czech radio astronomer Zdeňka Plavcová (b. 1930) was codesigner of the meteor radar of the Ondřejov Observatory that has been in operation since 1958. After 1969 she was a software specialist in the astronomy department of the University of California at Los Angeles.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 1998 FE73 = 1975 VT7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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