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JPL Small-Body Database Browser
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19617 Duhamel (1999 PH1)
Classification: Outer Main-belt Asteroid          SPK-ID: 2019617
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1448955388008886 3.7358e-08  
a 3.213295208034477 2.0271e-08 au
q 2.747703067540008 1.2095e-07 au
i 1.880606564917367 4.7366e-06 deg
node 138.5475294603513 0.00013851 deg
peri 291.4871920525774 0.00013981 deg
M 138.124763716853 1.7439e-05 deg
tp 2458193.277211678900
(2018-Mar-15.77721168)
0.00010138 TDB
period 2103.896477182817
5.76
1.9909e-05
5.451e-08
d
yr
n .1711110807514879 1.6192e-09 deg/d
Q 3.678887348528946 2.3208e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1320  
   data-arc span      9221 days (25.25 yr)  
   first obs. used      1994-10-31  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52738  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:52:02  

Additional Information
 Earth MOID = 1.76282 au 
 Jupiter MOID = 1.60933 au 
 T_jup = 3.174 
[ 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 13.7   n/a MPO384922  
diameter diameter 10.532 km 0.242 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19617 Duhamel           Discovered 1999 Aug. 8 by P. G. Comba at Prescott.
Jean-Maria-Constant Duhamel (1797-1872) was a French applied mathematician who introduced a method to study the propagation of heat in solids with variable boundary temperatures. A generalization of this method is referred to as the Duhamel principle.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 1999 PH1 = 1996 DO6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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