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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 ]

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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 .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 
[ 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 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

[ show close-approach data ]
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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