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 ]  
8989 (1979 XJ)
Classification: Main-belt Asteroid          SPK-ID: 2008989
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 .2391031364222801 5.6168e-08  
a 2.192077840128896 1.5142e-08 AU
q 1.6679451532723 1.2824e-07 AU
i 6.066492429808942 6.0987e-06 deg
node 106.9507644130628 5.7228e-05 deg
peri 246.5250996140141 5.9164e-05 deg
M 325.5505267536826 1.9632e-05 deg
tp 2457113.939020899187
(2015-Apr-01.43902090)
6.5386e-05 JED
period 1185.447662195324
3.25
1.2283e-05
3.363e-08
d
yr
n .3036827449077911 3.1467e-09 deg/d
Q 2.716210526985493 1.8763e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      955  
   data-arc span      12614 days (34.54 yr)  
   first obs. used      1979-12-15  
   last obs. used      2014-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51409  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:13:46  

Additional Information
 Earth MOID = .674164 AU 
 T_jup = 3.627 
[ 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 14.3 mag n/a MPO302120  

8989 (1979 XJ)          Discovered 1979-Dec-15 by Debehogne, H., Netto, E. R. at La Silla (809)
Reference: 19980808/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1979 XJ = 1992 WG1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Aug-30 12:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin