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33167 (1998 EJ9)
Classification: Main-belt Asteroid          SPK-ID: 2033167
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1045127799792621 9.2739e-08  
a 2.628636175914659 3.8525e-08 AU
q 2.353910101615761 2.4192e-07 AU
i 22.77780126849386 8.6174e-06 deg
node 122.0682778358725 2.2277e-05 deg
peri 317.0346367554632 5.0513e-05 deg
M 327.8280309287954 5.1362e-05 deg
tp 2456939.613503849339
(2014-Oct-09.11350385)
0.00022379 JED
period 1556.661368003948
4.26
3.4222e-05
9.369e-08
d
yr
n .2312641704866198 5.0841e-09 deg/d
Q 2.903362250213556 4.2552e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      516  
   data-arc span      5756 days (15.76 yr)  
   first obs. used      1998-03-01  
   last obs. used      2013-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55179  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 03:18:51  

Additional Information
 Earth MOID = 1.40279 AU 
 T_jup = 3.283 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7 mag n/a MPO267822  

33167 (1998 EJ9)          Discovered 1998-Mar-11 by BAO Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 EJ9 = 1999 LS4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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