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 ]  
18635 Frouard (1998 EX1)
Classification: Main-belt Asteroid          SPK-ID: 2018635
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .177891017149936 1.1774e-07  
a 2.540828475443586 1.5494e-08 au
q 2.088837913543406 2.9765e-07 au
i .7628294626191334 5.4403e-06 deg
node 56.22906631826706 0.00034451 deg
peri 325.9747333914553 0.00034475 deg
M 343.9098056420128 1.9066e-05 deg
tp 2459066.618080691227
(2020-Aug-05.11808069)
7.8512e-05 TDB
period 1479.317683756005
4.05
1.3531e-05
3.705e-08
d
yr
n .2433554360588428 2.2259e-09 deg/d
Q 2.992819037343767 1.825e-08 au
  Orbit Determination Parameters
   # obs. used (total)      839  
   data-arc span      14122 days (38.66 yr)  
   first obs. used      1979-08-22  
   last obs. used      2018-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53953  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-07 03:25:08  

Additional Information
 Earth MOID = 1.09199 au 
 Jupiter MOID = 2.46395 au 
 T_jup = 3.423 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5   n/a MPO395181  

18635 Frouard           Discovered 1998 Mar. 2 by the OCA-DLR Asteroid Survey at Caussols.
Frouard is a city in the Lorraine region of France known for its mill, which it has had since the high Middle Ages. Later the city had an active steel industry, and today it is mostly known for its fluvial harbor.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030614/MPCPages.arcLast Updated: 2005-04-26

Alternate Designations
 1998 EX1 = 1979 QT = 1991 PY25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jun-03 20:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin