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 ]  
442518 (2011 WM85)
Classification: Main-belt Asteroid          SPK-ID: 2442518
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08619384944270365 1.1701e-07  
a 2.796466457374751 5.4234e-08 au
q 2.555428248576221 3.3041e-07 au
i 4.749594320872663 8.3005e-06 deg
node 99.85743570923418 0.00012008 deg
peri 320.1766973388263 0.00013377 deg
M 218.8842946599203 5.9143e-05 deg
tp 2459270.054138381886
(2021-Feb-24.55413838)
0.00028817 TDB
period 1708.098253391352
4.68
4.969e-05
1.36e-07
d
yr
n .2107607096285218 6.1312e-09 deg/d
Q 3.037504666173281 5.8909e-08 au
  Orbit Determination Parameters
   # obs. used (total)      79  
   data-arc span      6168 days (16.89 yr)  
   first obs. used      2001-05-24  
   last obs. used      2018-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5173  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:32:30  

Additional Information
 Earth MOID = 1.57008 au 
 Jupiter MOID = 2.22028 au 
 T_jup = 3.316 
[ 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 16.9   n/a MPO440832  

442518 (2011 WM85)          Discovered 2008-Feb-08 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 WM85 = 2008 CT91 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin