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205P/Giacobini-B
Classification: Jupiter-family Comet          SPK-ID: 1002996
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2454735.5 (2008-Sep-26.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5753279137768729 0.01057  
a 3.60328142190863 0.10322 au
q 1.530213038690974 0.0057514 au
i 15.40528193605396 0.15096 deg
node 179.5073325093614 0.18213 deg
peri 154.0793970125158 0.15102 deg
M 2.339584320598842 0.053132 deg
tp 2454719.263893101803
(2008-Sep-09.76389310)
0.34371 TDB
period 2498.306400794663
6.84
107.35
0.2939
d
yr
n .1440976174441578 0.006192 deg/d
Q 5.676349805126287 0.16261 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 7.838648189527286E-6 3.708E-6
A2 [EST] -2.395403737244474E-7 2.412E-6
  Orbit Determination Parameters
   # obs. used (total)      66  
   data-arc span      19 days  
   first obs. used      2008-09-17  
   last obs. used      2008-10-06  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      9  
   norm. resid. RMS      1.0167  
   source      ORB  
   producer      Otto Matic  
   solution date      2011-Sep-14 21:12:45  

Additional Information
 Earth MOID = .536385 au 
 T_jup = 2.756 
[ hide covariance matrix ]
Orbit Covariance (8×8)
  e q tp node peri i A1 A2
e .0001117199058680269 6.078064773787177E-5 -.003550337034802146 -.001924137394273622 -.00152617775119401 .001594836284078739 3.175503380788159E-8 2.0684522136318E-8
q 6.078064773787177E-5 3.30789947053169E-5 -.001939350365837411 -.001047439233839108 -.000835049898615411 .0008681785372196286 1.709733192467355E-8 1.138339650849443E-8
tp -.003550337034802146 -.001939350365837411 .1181390655431128 .06156890142349317 .05172688883888033 -.05103216556659496 -8.905958347002081E-7 -7.43693067259697E-7
node -.001924137394273622 -.001047439233839108 .06156890142349317 .03317291060684 .02654117032017255 -.02749566283806441 -5.37891877166029E-7 -3.629201394613078E-7
peri -.00152617775119401 -.000835049898615411 .05172688883888033 .02654117032017255 .02280839333280891 -.02199902551259389 -3.613845864868635E-7 -3.352223922352695E-7
i .001594836284078739 .0008681785372196286 -.05103216556659496 -.02749566283806441 -.02199902551259389 .0227900284300371 4.458600907734791E-7 3.007978396950319E-7
A1 3.175503380788159E-8 1.709733192467355E-8 -8.905958347002081E-7 -5.37891877166029E-7 -3.613845864868635E-7 4.458600907734791E-7 1.374886464815808E-11 2.868122404766254E-12
A2 2.0684522136318E-8 1.138339650849443E-8 -7.43693067259697E-7 -3.629201394613078E-7 -3.352223922352695E-7 3.007978396950319E-7 2.868122404766254E-12 5.817323986418872E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 18.5   0.9 3 from 9 observations, assumed slope, autocmod 2.5a
comet total magnitude slope K1 10.   n/a 3 autocmod 2.5a
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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