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 ]  
18741 (1998 WB6)
Classification: Main-belt Asteroid          SPK-ID: 2018741
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08899746973056978 3.4905e-08  
a 2.270452745265805 7.3355e-09 au
q 2.068388195794322 7.9388e-08 au
i 5.941898537680756 3.928e-06 deg
node 243.714214025196 3.8111e-05 deg
peri 250.9097070162047 4.5161e-05 deg
M 278.896017806967 2.4514e-05 deg
tp 2458882.018413087473
(2020-Feb-02.51841309)
8.5287e-05 TDB
period 1249.588811438118
3.42
6.0558e-06
1.658e-08
d
yr
n .2880947690190069 1.3962e-09 deg/d
Q 2.472517294737287 7.9883e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1917  
   data-arc span      12320 days (33.73 yr)  
   first obs. used      1986-03-15  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49014  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:31:05  

Additional Information
 Earth MOID = 1.092 au 
 Jupiter MOID = 2.5774 au 
 T_jup = 3.601 
[ 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 14.0   n/a MPO358811  

18741 (1998 WB6)          Discovered 1998-Nov-18 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-17 21:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin