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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2391031451532681 5.612e-08  
a 2.192077841618708 1.5137e-08 AU
q 1.667945135266888 1.2815e-07 AU
i 6.066492430745872 6.0963e-06 deg
node 106.9507643774311 5.7128e-05 deg
peri 246.5250995708517 5.907e-05 deg
M 325.5505254446404 1.9629e-05 deg
tp 2457113.939025325391
(2015-Apr-01.43902533)
6.5376e-05 JED
period 1185.447663403831
3.25
1.2279e-05
3.362e-08
d
yr
n .3036827445982012 3.1456e-09 deg/d
Q 2.716210547970529 1.8757e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      958  
   data-arc span      12657 days (34.65 yr)  
   first obs. used      1979-12-15  
   last obs. used      2014-08-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52061  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:54:22  

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 ]
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