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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1497079021365356 6.5285e-08  
a 2.910336478367526 2.4591e-08 AU
q 2.474636109679691 1.912e-07 AU
i 8.403605331347158 6.8337e-06 deg
node 168.3140774485284 3.8414e-05 deg
peri 169.4444721180918 4.3332e-05 deg
M 87.3143723207544 1.8724e-05 deg
tp 2456560.658233568474
(2013-Sep-25.15823357)
9.4017e-05 JED
period 1813.481924071641
4.97
2.2984e-05
6.293e-08
d
yr
n .1985131449183269 2.516e-09 deg/d
Q 3.346036847055361 2.8272e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1087  
   data-arc span      7337 days (20.09 yr)  
   first obs. used      1994-11-26  
   last obs. used      2014-12-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50083  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:30:44  

Additional Information
 Earth MOID = 1.46678 AU 
 T_jup = 3.251 
[ 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 12.7 mag n/a MPO267746  

9644 (1994 WQ3)          Discovered 1994-Nov-26 by Shimizu, Y., Urata, T. at Nachi-Katsuura (905)
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 2015-Jan-26 00:23 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin