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13962 Delambre (1991 PO4)
Classification: Main-belt Asteroid          SPK-ID: 2013962
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1861327840306004 6.6644e-08  
a 3.186812346217836 4.3098e-08 AU
q 2.593642092033221 2.1021e-07 AU
i 2.073429251449937 7.1762e-06 deg
node 154.6958983861735 0.00017923 deg
peri 230.4817355668546 0.00018048 deg
M 316.949895909885 2.2727e-05 deg
tp 2457048.987684110772
(2015-Jan-26.48768411)
0.00013407 JED
period 2077.940766243547
5.69
4.2152e-05
1.154e-07
d
yr
n .1732484418460107 3.5145e-09 deg/d
Q 3.779982600402452 5.112e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      964  
   data-arc span      16330 days (44.71 yr)  
   first obs. used      1969-10-14  
   last obs. used      2014-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53252  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:31:38  

Additional Information
 Earth MOID = 1.59688 AU 
 T_jup = 3.170 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0 mag n/a PDS3 (MPC 39040)  

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 | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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