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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1639987649772498 5.7958e-08  
a 3.241324872963352 2.1868e-08 au
q 2.709751596907322 1.9201e-07 au
i .6248996360411162 6.202e-06 deg
node 174.8206788902503 0.00045553 deg
peri 191.4072033799214 0.00045586 deg
M 358.7595238167173 1.6356e-05 deg
tp 2458607.844600862159
(2019-May-04.34460086)
9.6872e-05 TDB
period 2131.484945870071
5.84
2.157e-05
5.906e-08
d
yr
n .1688963371275644 1.7092e-09 deg/d
Q 3.772898149019384 2.5454e-08 au
  Orbit Determination Parameters
   # obs. used (total)      742  
   data-arc span      21230 days (58.12 yr)  
   first obs. used      1960-09-24  
   last obs. used      2018-11-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54152  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 18:51:50  

Additional Information
 Earth MOID = 1.70742 au 
 Jupiter MOID = 1.6863 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 14.6   n/a MPO272675  

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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