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11942 Guettard (1993 NV)
Classification: Main-belt Asteroid          SPK-ID: 2011942
[ 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05404569435884118 3.1597e-08  
a 2.873963601574162 1.3028e-08 au
q 2.718638243165051 9.1817e-08 au
i .8006588297452932 3.2352e-06 deg
node 244.2245245072427 0.00030121 deg
peri 40.69031429229519 0.00030367 deg
M 233.5666127023687 3.9942e-05 deg
tp 2459825.499391859748
(2022-Sep-02.99939186)		 0.00019837 TDB
period 1779.591497773031
4.87		 1.2101e-05
3.313e-08		 d
yr
n .2022936165128355 1.3756e-09 deg/d
Q 3.029288959983274 1.3733e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1945  
   data-arc span      15093 days (41.32 yr)  
   first obs. used      1979-09-23  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52886  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:03:13  

Additional Information
 Earth MOID = 1.70034 au 
 Jupiter MOID = 2.04379 au 
 T_jup = 3.295 
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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 13.76   n/a E2021B10  
diameter diameter 4.341 km 0.721 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.373   0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11942 Guettard           Discovered 1993 July 12 by E. W. Elst at the European Southern Observatory.
Jean-Etienne Guettard (1715-1786) was a French geologist and mineralogist. From the evidence of fossils found in the volcanic hills of the Puy de Dôme, in south-central France, he concluded correctly that they conflicted with the time scheme of the Old Testament.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

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Alternate Designations
 1993 NV = 1979 SQ5 = 1997 EX47 
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