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11498 Julgeerts (1989 GS4)
Classification: Main-belt Asteroid          SPK-ID: 2011498
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .150281901507665 4.1569e-08  
a 2.759221646400561 1.9866e-08 au
q 2.344560570698375 1.1694e-07 au
i 2.350885426043596 5.8315e-06 deg
node 175.8042887513338 0.00010618 deg
peri 96.7563858765206 0.00010831 deg
M 292.3961732683398 2.4211e-05 deg
tp 2457914.874338654207
(2017-Jun-10.37433865)
0.00011417 JED
period 1674.088101029236
4.58
1.808e-05
4.95e-08
d
yr
n .2150424459612791 2.3224e-09 deg/d
Q 3.173882722102748 2.2851e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1293  
   data-arc span      9866 days (27.01 yr)  
   first obs. used      1989-04-03  
   last obs. used      2016-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51577  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:11:59  

Additional Information
 Earth MOID = 1.32958 au 
 Jupiter MOID = 1.92601 au 
 T_jup = 3.324 
[ 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 14.0 mag n/a MPO365388  

11498 Julgeerts           Discovered 1989 Apr. 3 by E. W. Elst at the European Southern Observatory.
Julien Armand Geerts (b. 1909) is a well-known commercial artist in Belgium. He was for many years a good friend of the discoverer's parents. The naming is on the occasion of Geerts' ninetieth birthday.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19991123/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1989 GS4 = 1990 RX6 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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