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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07796761668285408 5.0425e-08  
a 3.043099973584835 2.4257e-08 au
q 2.805836721316769 1.5658e-07 au
i 1.112336536465143 4.7241e-06 deg
node 78.48207503691351 0.00027281 deg
peri 99.95941016147239 0.00027474 deg
M 217.7265108013532 3.4893e-05 deg
tp 2459766.791907276946
(2022-Jul-06.29190728)
0.00019285 TDB
period 1938.977445295721
5.31
2.3184e-05
6.347e-08
d
yr
n .1856648724168604 2.22e-09 deg/d
Q 3.280363225852901 2.6148e-08 au
  Orbit Determination Parameters
   # obs. used (total)      683  
   data-arc span      9430 days (25.82 yr)  
   first obs. used      1994-12-31  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46743  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 16:51:54  

Additional Information
 Earth MOID = 1.80959 au 
 Jupiter MOID = 1.67833 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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