+ 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 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.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 ] 2020-Aug-15 18:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin