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13962 Delambre (1991 PO4)
Classification: Main-belt Asteroid          SPK-ID: 2013962
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1809752243288636 4.0189e-08  
a 3.189475791371556 1.6005e-08 au
q 2.612259694536609 1.261e-07 au
i 2.07240770365248 4.2226e-06 deg
node 154.196809041663 0.00010101 deg
peri 233.7222599025476 0.00010176 deg
M 42.6647326486878 9.4292e-06 deg
tp 2459149.927908018705
(2020-Oct-27.42790802)
5.5175e-05 TDB
period 2080.546334233185
5.70
1.5661e-05
4.288e-08
d
yr
n .173031474510604 1.3024e-09 deg/d
Q 3.766691888206503 1.8902e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2319  
   data-arc span      18803 days (51.48 yr)  
   first obs. used      1969-10-14  
   last obs. used      2021-04-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50116  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:10:24  

Additional Information
 Earth MOID = 1.61698 au 
 Jupiter MOID = 1.68449 au 
 T_jup = 3.170 
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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 13.12   n/a E2021B10  
diameter diameter 12.064 km 0.132 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.079   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13962 Delambre           Discovered 1991 Aug. 3 by E. W. Elst at the European Southern Observatory.
French astronomer Jean Baptiste Joseph Delambre (1749-1822) observed the 1796 transit of Mercury, although his colleagues had given up the task due to cloudy weather. In June 1792 he started the measurement of the Dunkerque-Rodez sector of the meridian to Barcelona using triangulation points around Paris.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051215/MPCPages.arcLast Updated: 2006-03-22

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Alternate Designations
 1991 PO4 = 1969 TU4 = 1975 VG1 = 1986 TH13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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