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 ]  
324088 (2005 WJ121)
Classification: Main-belt Asteroid          SPK-ID: 2324088
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05652733461598408 5.5408e-08  
a 2.881578427938322 3.1203e-08 au
q 2.718690479920051 1.7154e-07 au
i 5.323206814746015 6.7155e-06 deg
node 228.9945173007253 7.9545e-05 deg
peri 195.4522852870675 0.00011046 deg
M 266.8580271487945 7.727e-05 deg
tp 2459062.760755817160
(2020-Aug-01.26075582)
0.00038587 TDB
period 1786.668963518992
4.89
2.902e-05
7.945e-08
d
yr
n .201492278284697 3.2727e-09 deg/d
Q 3.044466375956592 3.2966e-08 au
  Orbit Determination Parameters
   # obs. used (total)      183  
   data-arc span      6910 days (18.92 yr)  
   first obs. used      2000-11-25  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58704  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 09:07:59  

Additional Information
 Earth MOID = 1.7318 au 
 Jupiter MOID = 2.17116 au 
 T_jup = 3.285 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO266818  

324088 (2005 WJ121)          Discovered 2005-Nov-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120406/Numbers.arcLast Updated: 2012-04-09

[ show close-approach data ]
Alternate Designations
 2005 WJ121 = 2001 BN39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin