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129101 Geoffcollyer (2004 XF6)
Classification: Main-belt Asteroid          SPK-ID: 2129101
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07781406230332379 4.8011e-08  
a 3.043896122164826 2.2459e-08 au
q 2.807038199669847 1.5185e-07 au
i 1.112287945023963 4.7161e-06 deg
node 78.48308236841972 0.00023181 deg
peri 99.79548677512983 0.00023411 deg
M 255.0172343964074 3.5084e-05 deg
tp 2459766.164177495041
(2022-Jul-05.66417750)
0.00019249 TDB
period 1939.738420181666
5.31
2.1468e-05
5.878e-08
d
yr
n .1855920346034514 2.054e-09 deg/d
Q 3.280754044659806 2.4206e-08 au
  Orbit Determination Parameters
   # obs. used (total)      758  
   data-arc span      9529 days (26.09 yr)  
   first obs. used      1994-12-31  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46052  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:45:07  

Additional Information
 Earth MOID = 1.81036 au 
 Jupiter MOID = 1.67699 au 
 T_jup = 3.234 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO453770  

129101 Geoffcollyer           Discovered 2004 Dec. 9 at the Jarnac Observatory.
Canadian computer scientist Geoff Collyer (b. 1958) is co-author of C News and designer of the NOV database used by USENET newsreaders. While at Bell Laboratories, he contributed to the Plan 9 operating system. Geoff is a noted Plan 9 and UNIX enthusiast.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060809/MPCPages.arcLast Updated: 2007-08-08

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