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JPL Small-Body Database Browser
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40457 Williamkuhn (1999 RG43)
Classification: Main-belt Asteroid          SPK-ID: 2040457
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1384911472235589 3.4424e-08  
a 2.368120470653567 9.0001e-09 au
q 2.04015674990916 7.9666e-08 au
i 8.099534775544207 4.1947e-06 deg
node 160.4322315131138 2.5219e-05 deg
peri 106.8987571171785 2.9193e-05 deg
M 208.8189280094551 1.499e-05 deg
tp 2459159.483559121275
(2020-Nov-05.98355912)
5.6517e-05 TDB
period 1331.07986756599
3.64
7.5882e-06
2.078e-08
d
yr
n .270457099361209 1.5418e-09 deg/d
Q 2.696084191397973 1.0247e-08 au
  Orbit Determination Parameters
   # obs. used (total)      965  
   data-arc span      7622 days (20.87 yr)  
   first obs. used      1998-02-24  
   last obs. used      2019-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56488  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:11:24  

Additional Information
 Earth MOID = 1.04154 au 
 Jupiter MOID = 2.42025 au 
 T_jup = 3.520 
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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 15.4   n/a MPO263684  
diameter diameter 2.106 km 0.466 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.331   0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

40457 Williamkuhn           Discovered 1999 Sept. 4 by M. Collins and M. White at the OCA-Anza Observatory.
William Kuhn (b. 1918) lives in Orange, California. He designed and directed the building of the 0.55-m Kuhn telescope in Anza for the Orange County Astronomers. This telescope has been used for the discovery of numerous minor planets. Kuhn has dedicated his life to educating, assisting and inspiring astronomers of all ages.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1999 RG43 = 1998 FJ33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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