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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1857195241728521 5.4226e-08  
a 3.185592384009227 2.5558e-08 au
q 2.593965682242372 1.7502e-07 au
i 2.073653784935592 6.3237e-06 deg
node 154.6988717241927 0.00013729 deg
peri 230.5363364250039 0.0001386 deg
M 60.89818385655575 1.4975e-05 deg
tp 2457049.193994751799
(2015-Jan-26.69399475)
8.6533e-05 JED
period 2076.747677521053
5.69
2.4992e-05
6.842e-08
d
yr
n .1733479728407452 2.0861e-09 deg/d
Q 3.777219085776082 3.0304e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1251  
   data-arc span      16868 days (46.18 yr)  
   first obs. used      1969-10-14  
   last obs. used      2015-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52294  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:25:58  

Additional Information
 Earth MOID = 1.59699 au 
 Jupiter MOID = 1.67381 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 13.1 mag n/a MPO350914  

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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