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128177 Griffioen (2003 RA11)
Classification: Main-belt Asteroid          SPK-ID: 2128177
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03093904711704884 8.3096e-08  
a 2.873495681731912 4.9318e-08 AU
q 2.784592463444172 2.1964e-07 AU
i 7.533675749643614 1.0738e-05 deg
node 173.6486805009879 5.5373e-05 deg
peri 118.7474904548153 0.00018345 deg
M 154.3070691812065 0.00017509 deg
tp 2456237.898646175666
(2012-Nov-06.39864618)
0.00086067 JED
period 1779.156903397377
4.87
4.5804e-05
1.254e-07
d
yr
n .202343030742575 5.2093e-09 deg/d
Q 2.962398900019652 5.0844e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      302  
   data-arc span      4641 days (12.71 yr)  
   first obs. used      2002-05-04  
   last obs. used      2015-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .65244  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 19:14:13  

Additional Information
 Earth MOID = 1.77974 AU 
 T_jup = 3.284 
[ 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 15.7 mag n/a MPO270639  

128177 Griffioen           Discovered 2003 Sept. 5 by A. Vanden Heuvel at the Calvin College Observatory.
Roger Griffioen (b. 1934) served 37 years at Calvin College, including seven years as academic dean and 17 years as physics chair. He built a high-quality physics program, implemented the construction of a college observatory and played a formative role in the lives of many students.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060613/MPCPages.arcLast Updated: 2008-05-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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