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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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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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07829362536240844 3.4336e-08  
a 2.614054835752762 1.1209e-08 au
q 2.409391005765543 9.1043e-08 au
i 4.895473760931838 3.9297e-06 deg
node 77.78205135910108 4.7817e-05 deg
peri 2.385781329040463 5.6082e-05 deg
M 260.3520059139729 3.0714e-05 deg
tp 2459823.803576025504
(2022-Sep-01.30357603)
0.00013293 TDB
period 1543.726883617739
4.23
9.9296e-06
2.719e-08
d
yr
n .2332018725723922 1.5e-09 deg/d
Q 2.818718665739981 1.2087e-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 = 1.42495 au 
 Jupiter MOID = 2.35019 au 
 T_jup = 3.399 
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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 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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1902-Apr-14 12:13 00:02 Iris 0.046113824935463 0.0461043215507769 0.0461233305714018 4.21226107683046 4.2122610472349 2415854.008802111 2.20020169435793 695.740796609549 38.2247092015198 -47.1765067302983 132472.791089073 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 02:34:47 2021-Apr-13 02:34
2200-Jul-23 04:32 00:06 Amphi 0.00945794754886073 0.00944270142090914 0.00947326126385828 2.46008490887684 2.4600846618034 2524796.689023362 5.87470918296112 1471.66844931405 23.1979194358481 58.8764382780852 52140.5350222153 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 02:34:47 2021-Apr-13 02:34

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