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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2389508200120002 4.9117e-08  
a 2.191856304864469 1.3284e-08 au
q 1.668110443468632 1.1052e-07 au
i 6.066317701041902 6.0348e-06 deg
node 106.949074899893 5.3159e-05 deg
peri 246.5228814903118 5.5349e-05 deg
M 87.04445246228265 1.9714e-05 deg
tp 2457113.913886842432
(2015-Apr-01.41388684)
6.3291e-05 JED
period 1185.267961578938
3.25
1.0775e-05
2.95e-08
d
yr
n .3037287867972329 2.7612e-09 deg/d
Q 2.715602166260306 1.6458e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1081  
   data-arc span      13154 days (36.01 yr)  
   first obs. used      1979-12-15  
   last obs. used      2015-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51806  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:08:59  

Additional Information
 Earth MOID = .672136 au 
 Jupiter MOID = 2.72439 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 14.4 mag n/a MPO358717  

8989 (1979 XJ)          Discovered 1979-Dec-15 by Debehogne, H., Netto, E. R. at La Silla
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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