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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .152033083162123 4.866e-08  
a 2.756145953865001 2.379e-08 AU
q 2.337120586854094 1.3071e-07 AU
i 2.347523088496181 6.0974e-06 deg
node 175.8661002104292 0.00012625 deg
peri 96.89595997918401 0.00012804 deg
M 163.1652001675213 2.3558e-05 deg
tp 2456243.010211610301
(2012-Nov-11.51021161)
0.00010626 JED
period 1671.289732984208
4.58
2.1638e-05
5.924e-08
d
yr
n .2154025079524627 2.7889e-09 deg/d
Q 3.175171320875907 2.7406e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1124  
   data-arc span      9478 days (25.95 yr)  
   first obs. used      1989-04-03  
   last obs. used      2015-03-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52372  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:41:25  

Additional Information
 Earth MOID = 1.32377 AU 
 T_jup = 3.325 
[ 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 13.9 mag n/a MPO279637  

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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