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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1445722458244747 3.6224e-08  
a 3.214102762730094 1.8694e-08 au
q 2.749432708011555 1.1661e-07 au
i 1.880693955403719 4.1442e-06 deg
node 138.5427163558252 0.00013382 deg
peri 291.3418575004565 0.00013475 deg
M 206.0745609083761 1.5897e-05 deg
tp 2460296.403548661376
(2023-Dec-17.90354866)
9.5959e-05 TDB
period 2104.68964344
5.76
1.8362e-05
5.027e-08
d
yr
n .1710465964053492 1.4922e-09 deg/d
Q 3.678772817448632 2.1396e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1453  
   data-arc span      9729 days (26.64 yr)  
   first obs. used      1994-10-31  
   last obs. used      2021-06-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51631  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:01:25  

Additional Information
 Earth MOID = 1.76429 au 
 Jupiter MOID = 1.61101 au 
 T_jup = 3.173 
[ 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 13.73   n/a MPCxxxxx  
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 
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