Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1643639254215093 5.5421e-08  
a 3.242711650614181 1.7414e-08 au
q 2.709726834709172 1.8039e-07 au
i .6248563819288718 5.3434e-06 deg
node 174.8130770460788 0.00043344 deg
peri 191.4609806732806 0.00043373 deg
M 66.23625730301161 1.3806e-05 deg
tp 2458608.077221391507
(2019-May-04.57722139)
8.1416e-05 TDB
period 2132.853003043003
5.84
1.7181e-05
4.704e-08
d
yr
n .1687880034331375 1.3596e-09 deg/d
Q 3.77569646651919 2.0276e-08 au
  Orbit Determination Parameters
   # obs. used (total)      865  
   data-arc span      21620 days (59.19 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52274  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 22:30:31  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-20 21:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin