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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07775063301682618 4.8003e-08  
a 3.044564695513622 2.2493e-08 au
q 2.807847863176757 1.5189e-07 au
i 1.112279810609142 4.7155e-06 deg
node 78.48292926308626 0.00023181 deg
peri 99.63277043736706 0.00023411 deg
M 291.5438641052269 3.5322e-05 deg
tp 2459765.474300233318
(2022-Jul-04.97430023)
0.00019265 TDB
period 1940.377532967597
5.31
2.1503e-05
5.887e-08
d
yr
n .185530905137527 2.0561e-09 deg/d
Q 3.281281527850487 2.4242e-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 = 1.8125 au 
 Jupiter MOID = 1.6757 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 15.19   n/a MPCxxxxx  

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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