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7720 Lepaute (4559 P-L)
Classification: Outer Main-belt Asteroid          SPK-ID: 2007720
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1646277393917148 5.372e-08  
a 3.243165296277958 1.6561e-08 au
q 2.709250325078057 1.7372e-07 au
i .6251054608346929 4.8123e-06 deg
node 174.7840459933507 0.00041724 deg
peri 191.5528748454066 0.00041752 deg
M 132.9682431812833 1.3321e-05 deg
tp 2458608.552134977317
(2019-May-05.05213498)
7.8052e-05 TDB
period 2133.300588332464
5.84
1.634e-05
4.474e-08
d
yr
n .1687525902204907 1.2926e-09 deg/d
Q 3.777080267477859 1.9287e-08 au
  Orbit Determination Parameters
   # obs. used (total)      965  
   data-arc span      22084 days (60.46 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-03-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52784  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 15:33:49  

Additional Information
 Earth MOID = 1.70698 au 
 Jupiter MOID = 1.68739 au 
 T_jup = 3.162 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457009.5 (2014-Dec-18.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1591177009992512 5.2518e-08  
q 2.732101642320045 1.6737e-07 au
tp 2456452.623447501975
(2013-Jun-09.12344750)
8.3434e-05 TDB
node 175.0108462330647 0.00043344 deg
peri 188.7605378677656 0.00043367 deg
i .6024545904511449 4.7905e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      965  
   data-arc span      22084 days (60.46 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-03-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52784  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 15:33:49  

Additional Information
 Jupiter MOID = 1.68739 au 
 T_jup = 3.162 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.758138387717291E-15 -8.759612048793124E-15 4.963452191406141E-13 5.893078731700614E-14 -8.675490841261137E-14 -5.14223488480663E-16
q -8.759612048793124E-15 2.801333620367841E-14 -1.541968291861097E-12 -1.667242020360109E-13 2.707539428188978E-13 1.392710019453914E-15
tp 4.963452191406141E-13 -1.541968291861097E-12 6.961289582822245E-9 3.367781180376457E-11 1.179162097963017E-9 -2.45593094529261E-13
node 5.893078731700614E-14 -1.667242020360109E-13 3.367781180376457E-11 1.878672631032595E-7 -1.87855283765676E-7 2.324870677165035E-10
peri -8.675490841261137E-14 2.707539428188978E-13 1.179162097963017E-9 -1.87855283765676E-7 1.880699942922969E-7 -2.325449482900142E-10
i -5.14223488480663E-16 1.392710019453914E-15 -2.45593094529261E-13 2.324870677165035E-10 -2.325449482900142E-10 2.294931232769319E-11

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 14.65   n/a MPCxxxxx  

7720 Lepaute           Discovered 1960 Sept. 26 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Named after Nicole-Reine Lepaute (1723-1788), extraordinarily talented French mathematician. The astronomers Lalande and Clairaut sought her help for the computations needed to predict the 1759 return of comet 1P/Halley. Lepaute's computations for the annular eclipse of 1764 were used throughout Europe. Unfortunately, years of calculation left her nearly blind.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980211/MPCPages.arcLast Updated: 2009-11-17

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Alternate Designations
 4559 P-L = 1978 WN17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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