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19980 Barrysimon (1989 WF2)
Classification: Main-belt Asteroid          SPK-ID: 2019980
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2537327572311839 3.2486e-08  
a 2.352150349988022 9.6267e-09 au
q 1.755332756263267 7.7258e-08 au
i 21.62142937472144 5.3531e-06 deg
node 221.5827281862138 1.051e-05 deg
peri 261.54281423343 1.4955e-05 deg
M 136.6681229357724 1.0037e-05 deg
tp 2458500.280320639474
3.6031e-05 TDB
period 1317.637798057841
n .2732162059487284 1.6773e-09 deg/d
Q 2.948967943712776 1.2069e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1363  
   data-arc span      25779 days (70.58 yr)  
   first obs. used      1949-11-19  
   last obs. used      2020-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46073  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:38:01  

Additional Information
 Earth MOID = .9048 au 
 Jupiter MOID = 2.57153 au 
 T_jup = 3.421 
[ 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 14.3   n/a MPO384926  
diameter diameter 3.601 km 0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.312   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

19980 Barrysimon           Discovered 1989 Nov. 22 by C. S. Shoemaker and D. H. Levy at Palomar.
Barry Simon (b. 1952), a first-rate amateur astronomer, founded the Deep South Regional Stargaze in 1983 and has managed it since then. Now in its twentieth year, this event helps participants from many southern states observe under a dark sky. Simon has amassed a large collection of refractor telescopes.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030501/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1989 WF2 = 2000 UL16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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