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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .238713116714747 4.6128e-08  
a 2.192503522977366 1.2459e-08 au
q 1.669124173599376 1.0284e-07 au
i 6.065012707867424 6.0129e-06 deg
node 106.9414960626515 5.0295e-05 deg
peri 246.5902551012936 5.2625e-05 deg
M 147.7181174585072 1.9799e-05 deg
tp 2457113.935812782608
(2015-Apr-01.43581278)
6.2638e-05 JED
period 1185.792984719447
3.25
1.0107e-05
2.767e-08
d
yr
n .303594307471109 2.5878e-09 deg/d
Q 2.715882872355356 1.5433e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1149  
   data-arc span      13227 days (36.21 yr)  
   first obs. used      1979-12-15  
   last obs. used      2016-03-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51297  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 16:01:56  

Additional Information
 Earth MOID = .674134 au 
 Jupiter MOID = 2.72457 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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