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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03182419135428149 4.5662e-08  
a 2.268387133433845 1.2733e-08 AU
q 2.196197547233856 1.0533e-07 AU
i 4.426676262898129 6.3129e-06 deg
node 67.08798193658332 6.6589e-05 deg
peri 69.20508614912883 0.00014243 deg
M 33.55993052615479 0.00012381 deg
tp 2456884.169728392449
(2014-Aug-14.66972839)
0.00042938 JED
period 1247.883923540314
3.42
1.0507e-05
2.877e-08
d
yr
n .2884883707602071 2.4291e-09 deg/d
Q 2.340576719633834 1.3138e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1168  
   data-arc span      9262 days (25.36 yr)  
   first obs. used      1989-11-20  
   last obs. used      2015-03-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49867  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:33:16  

Additional Information
 Earth MOID = 1.21489 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 2015-Apr-18 19:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin