+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1644975952981932 5.3722e-08   a 3.243154989794379 1.6502e-08 au q 2.709663792793867 1.7372e-07 au i .6249063466650264 4.8131e-06 deg node 174.7979235299105 0.00041752 deg peri 191.5157286928373 0.00041779 deg M 99.93404339928252 1.3294e-05 deg tp 2458608.310174070972 (2019-May-04.81017407) 7.8147e-05 TDB period 2133.29041918843 5.84 1.6282e-05 4.458e-08 d yr n .1687533946442019 1.288e-09 deg/d Q 3.776646186794891 1.9216e-08 au   Orbit Determination Parameters    # obs. used (total)      964      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      .52489      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 19:58:29   Additional Information  Earth MOID = 1.70666 au   Jupiter MOID = 1.68715 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 14.64   n/a E2021B10   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.arc Last 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 ] 2021-Apr-14 18:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin