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 ]  
8840 (1989 WT)
Classification: Main-belt Asteroid          SPK-ID: 2008840
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03161400857179163 3.9338e-08  
a 2.268286370689566 1.1431e-08 au
q 2.196576745923307 8.7926e-08 au
i 4.426618781225525 6.2167e-06 deg
node 67.08393828978042 6.2858e-05 deg
peri 69.18848502142258 0.00013924 deg
M 149.0016115756461 0.00012263 deg
tp 2456884.043536889970
(2014-Aug-14.54353689)
0.00042564 JED
period 1247.800777142733
3.42
9.4326e-06
2.583e-08
d
yr
n .2885075939961692 2.1809e-09 deg/d
Q 2.339995995455823 1.1793e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1262  
   data-arc span      9398 days (25.73 yr)  
   first obs. used      1989-11-20  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49005  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:25:58  

Additional Information
 Earth MOID = 1.21495 au 
 Jupiter MOID = 2.6494 au 
 T_jup = 3.610 
[ 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 13.7 mag n/a MPO267743  

8840 (1989 WT)          Discovered 1989-Nov-20 by Ueda, S., Kaneda, H. at Kushiro
Reference: 19980610/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 WT = 1984 GX = 1996 VT7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-08 21:14 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin