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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1643639746284441 5.5066e-08  
a 3.24271163681981 1.6923e-08 au
q 2.709726663618198 1.7882e-07 au
i .6248494735783021 5.1005e-06 deg
node 174.8124720241415 0.00043236 deg
peri 191.4616064436111 0.00043266 deg
M 66.23624191189 1.3558e-05 deg
tp 2458608.077315081645
(2019-May-04.57731508)
8.008e-05 TDB
period 2132.852989433391
5.84
1.6696e-05
4.571e-08
d
yr
n .1687880045101641 1.3213e-09 deg/d
Q 3.775696610021421 1.9704e-08 au
  Orbit Determination Parameters
   # obs. used (total)      892  
   data-arc span      21675 days (59.34 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52257  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:36:37  

Additional Information
 Earth MOID = 1.70826 au 
 Jupiter MOID = 1.68705 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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