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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 ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1508709751838185 4.7768e-08  
a 2.759077995476118 2.3048e-08 au
q 2.34281320769042 1.2909e-07 au
i 2.348990035054833 6.0038e-06 deg
node 175.8134343161111 0.00012462 deg
peri 96.77036126782291 0.00012643 deg
M 249.4294164344509 2.4079e-05 deg
tp 2457914.640119525989
(2017-Jun-10.14011953)
0.00011484 JED
period 1673.957367871082
4.58
2.0975e-05
5.743e-08
d
yr
n .2150592404021875 2.6948e-09 deg/d
Q 3.175342783261814 2.6526e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1160  
   data-arc span      9755 days (26.71 yr)  
   first obs. used      1989-04-03  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52545  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:17:57  

Additional Information
 Earth MOID = 1.32652 au 
 Jupiter MOID = 1.92365 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 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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