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 ]  
441861 (2009 WF219)
Classification: Main-belt Asteroid          SPK-ID: 2441861
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1693700720422605 1.0355e-07  
a 2.194003877669542 5.466e-08 au
q 1.822405282847653 2.6345e-07 au
i 4.722071967545495 6.6097e-06 deg
node 64.83170334287092 0.00013329 deg
peri 318.5552999782031 0.00014681 deg
M 353.7235291443122 7.5207e-05 deg
tp 2458621.195099980399
(2019-May-17.69509998)
0.00024869 TDB
period 1187.010370038184
3.25
4.4359e-05
1.214e-07
d
yr
n .3032829443507047 1.1334e-08 deg/d
Q 2.565602472491432 6.3918e-08 au
  Orbit Determination Parameters
   # obs. used (total)      47  
   data-arc span      3713 days (10.17 yr)  
   first obs. used      2006-12-26  
   last obs. used      2017-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57861  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:34:16  

Additional Information
 Earth MOID = .828681 au 
 Jupiter MOID = 2.88434 au 
 T_jup = 3.647 
[ 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 18.4   n/a MPO402743  

441861 (2009 WF219)          Discovered 2009-Nov-16 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-08 19:17 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin