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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2391315559854114 5.618e-08  
a 2.191880856005047 1.5116e-08 AU
q 1.667732976373924 1.2825e-07 AU
i 6.066528366224315 6.1029e-06 deg
node 106.9508376586053 5.7239e-05 deg
peri 246.5497593647946 5.9175e-05 deg
M 264.7901081703527 1.9248e-05 deg
tp 2457113.975362402803
(2015-Apr-01.47536240)
6.5382e-05 JED
period 1185.287876042607
3.25
1.2262e-05
3.357e-08
d
yr
n .3037236837366076 3.142e-09 deg/d
Q 2.716028735636169 1.8731e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      939  
   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      .51834  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:20:44  

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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