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129101 Geoffcollyer (2004 XF6)
Classification: Main-belt Asteroid          SPK-ID: 2129101
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07718217418203119 6.9351e-08  
a 3.043095606689393 4.2424e-08 au
q 2.808222871521319 2.0875e-07 au
i 1.113219308511865 6.6398e-06 deg
node 78.4493769366521 0.00037197 deg
peri 101.8708527786392 0.00037478 deg
M 278.9559139504852 5.1429e-05 deg
tp 2457837.006435198701
(2017-Mar-24.50643520)
0.00028205 JED
period 1938.973271603366
5.31
4.0547e-05
1.11e-07
d
yr
n .1856652720655147 3.8825e-09 deg/d
Q 3.277968341857468 4.5698e-08 au
  Orbit Determination Parameters
   # obs. used (total)      344  
   data-arc span      7656 days (20.96 yr)  
   first obs. used      1994-12-31  
   last obs. used      2015-12-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58401  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 17:31:12  

Additional Information
 Earth MOID = 1.81138 au 
 Jupiter MOID = 1.68235 au 
 T_jup = 3.235 
[ 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 15.2 mag n/a MPO359643  

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

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