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 ]  
392239 (2009 WP12)
Classification: Jupiter Trojan          SPK-ID: 2392239
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04629010075336029 1.4783e-07  
a 5.15774671117503 3.3647e-07 au
q 4.918994096254425 9.9079e-07 au
i 8.526000100671032 8.3241e-06 deg
node 75.61423562781118 8.1528e-05 deg
peri 272.2284601789334 0.00017474 deg
M 352.9251478830525 0.00014243 deg
tp 2458684.582053300048
(2019-Jul-20.08205330)
0.001687 TDB
period 4278.469526664498
11.71
0.00041866
1.146e-06
d
yr
n .08414223772224846 8.2336e-09 deg/d
Q 5.396499326095635 3.5204e-07 au
  Orbit Determination Parameters
   # obs. used (total)      91  
   data-arc span      4004 days (10.96 yr)  
   first obs. used      2008-10-07  
   last obs. used      2019-09-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61248  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 13:03:56  

Additional Information
 Earth MOID = 3.9252 au 
 Jupiter MOID = .0528987 au 
 T_jup = 2.976 
[ 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 14.1   n/a MPO455784  

392239 (2009 WP12)          Discovered 2009-Nov-16 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-04-17
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