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18680 Weirather (1998 FS103)
Classification: Main-belt Asteroid          SPK-ID: 2018680
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07608294931605451 3.1696e-08  
a 2.364900361452577 8.3136e-09 au
q 2.184971767114662 7.3041e-08 au
i 6.302462187444911 3.759e-06 deg
node 232.7995693322529 3.1279e-05 deg
peri 208.8188856649173 4.2757e-05 deg
M 186.0213366072745 2.8462e-05 deg
tp 2459842.464758573023
(2022-Sep-19.96475857)
0.00010567 TDB
period 1328.365838543116
3.64
7.0047e-06
1.918e-08
d
yr
n .2710096793778058 1.4291e-09 deg/d
Q 2.544828955790492 8.9462e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1578  
   data-arc span      15206 days (41.63 yr)  
   first obs. used      1978-11-30  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51899  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:34:49  

Additional Information
 Earth MOID = 1.20224 au 
 Jupiter MOID = 2.63091 au 
 T_jup = 3.537 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.72   n/a E2021B10  
diameter diameter 2.853 km 0.430 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.344   0.163 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18680 Weirather           Discovered 1998 Mar. 31 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Sara Jo Weirather (b. 1985) was awarded third place in the 2003 Intel International Science and Engineering Fair for her botany project. She attends the Central Lee High School, Donnellson, Iowa, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040830/MPCPages.arcLast Updated: 2004-09-06

Alternate Designations
 1998 FS103 = 1978 WL15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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