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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2391315088263588 6.7266e-08  
a 2.191880848211816 9.6708e-09 AU
q 1.667733073811325 1.4898e-07 AU
i 6.066529883105184 7.3443e-06 deg
node 106.9507200630869 6.4953e-05 deg
peri 246.5499011945765 6.7127e-05 deg
M 264.7900928576847 1.8289e-05 deg
tp 2457113.975411147404
(2015-Apr-01.47541115)
6.1241e-05 JED
period 1185.287869721172
3.25
7.8444e-06
2.148e-08
d
yr
n .3037236853564416 2.0101e-09 deg/d
Q 2.716028622612307 1.1983e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      886  
   data-arc span      12533 days (34.31 yr)  
   first obs. used      1979-12-15  
   last obs. used      2014-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58159  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:55:43  

Additional Information
 Earth MOID = .672385 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 14.2 mag n/a MPO263429  

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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