Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
9644 (1994 WQ3)
Classification: Main-belt Asteroid          SPK-ID: 2009644
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1486118180335416 6.139e-08  
a 2.914491187353177 2.366e-08 au
q 2.481363353357886 1.7789e-07 au
i 8.407737269664594 6.5633e-06 deg
node 168.2845282808107 3.7994e-05 deg
peri 169.9182694600471 4.2785e-05 deg
M 166.1781218915193 1.8892e-05 deg
tp 2456561.592857222511
(2013-Sep-26.09285722)
9.4117e-05 JED
period 1817.366618194453
4.98
2.213e-05
6.059e-08
d
yr
n .1980888150997616 2.4122e-09 deg/d
Q 3.347619021348468 2.7176e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1216  
   data-arc span      7689 days (21.05 yr)  
   first obs. used      1994-11-26  
   last obs. used      2015-12-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48566  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:11:25  

Additional Information
 Earth MOID = 1.47107 au 
 Jupiter MOID = 2.05078 au 
 T_jup = 3.250 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8 mag n/a MPO358724  

9644 (1994 WQ3)          Discovered 1994-Nov-26 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 19981110/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-07 17:24 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin