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11665 Dirichlet (1997 GL28)
Classification: Outer Main-belt Asteroid          SPK-ID: 2011665
[ 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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1467347468481391 3.9704e-08  
a 3.277340168702572 2.2946e-08 au
q 2.796440488712763 1.3312e-07 au
i 15.78815805956088 4.5583e-06 deg
node 215.1956190805244 1.6522e-05 deg
peri 309.3989167344803 2.2649e-05 deg
M 38.16688800209812 1.4975e-05 deg
tp 2458970.745007085293
(2020-May-01.24500709)		 8.9952e-05 TDB
period 2167.108763091913
5.93		 2.2759e-05
6.231e-08		 d
yr
n .1661199502909912 1.7446e-09 deg/d
Q 3.758239848692381 2.6313e-08 au
   Orbit Determination Parameters
   # obs. used (total)      909  
   data-arc span      9341 days (25.57 yr)  
   first obs. used      1994-10-26  
   last obs. used      2020-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53239  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:58:04  

Additional Information
 Earth MOID = 1.83051 au 
 Jupiter MOID = 1.37205 au 
 T_jup = 3.099 
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Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.18   n/a E2021B10  
diameter diameter 6.803 km 0.358 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.087   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11665 Dirichlet           Discovered 1997 Apr. 14 by P. G. Comba at Prescott.
Peter Gustav Lejeune Dirichlet (1805-1859) was the successor of Gauss and the predecessor of Riemann at Göttingen. He made important contributions in both pure and applied mathematics and gave the first rigorous proof of the convergence of Fourier series.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19991123/MPCPages.arcLast Updated: 2010-06-11

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