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73P/Schwassmann-Wachmann 3-G
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1002326
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2453839.5 (2006-Apr-14.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.693412971192622 1.9836e-05  
a 3.06335181161612 0.0001968 au
q 0.939183930115084 7.3739e-07 au
i 11.3895622899332 0.00013788 deg
node 69.90839960829794 0.00046429 deg
peri 198.7746010901946 0.00049912 deg
M 349.8718318710391 0.0010105 deg
tp 2453894.596262955670
(2006-Jun-08.09626296)
0.00018978 TDB
period 1958.365462686695
5.36
0.18872
0.0005167
d
yr
n .1838267712841062 1.7714e-05 deg/d
Q 5.187519693117151 0.00033326 au
  Orbit Determination Parameters
   # obs. used (total)      551  
   data-arc span      72 days  
   first obs. used      2006-02-20  
   last obs. used      2006-05-03  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      5  
   norm. resid. RMS      .97447  
   source      ORB  
   producer      Nick Mastrodemos  
   solution date      2006-Aug-22 12:40:51  

Additional Information
 Earth MOID = .0405397 au 
 T_jup = 2.783 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 3.934500584970283E-10 -8.54762990843922E-12 -3.716155165142456E-9 8.551462571920757E-9 -8.917847995801571E-9 2.693145065075113E-9
q -8.54762990843922E-12 5.437436160466654E-13 6.937247563384832E-11 -9.784165537283057E-11 7.181709352345316E-11 -7.013455699319499E-11
tp -3.716155165142456E-9 6.937247563384832E-11 3.601482969134965E-8 -8.198200621822876E-8 8.705068197227627E-8 -2.516415672292609E-8
node 8.551462571920757E-9 -9.784165537283057E-11 -8.198200621822876E-8 2.155626472039598E-7 -2.30304304489407E-7 5.464016631255461E-8
peri -8.917847995801571E-9 7.181709352345316E-11 8.705068197227627E-8 -2.30304304489407E-7 2.491249805159604E-7 -5.614986091143995E-8
i 2.693145065075113E-9 -7.013455699319499E-11 -2.516415672292609E-8 5.464016631255461E-8 -5.614986091143995E-8 1.901042830339832E-8

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 16.8   2.2 13 2 parameter fit from 98 observations
comet total magnitude slope K1 8.0   n/a 13 2 parameter fit from 98 observations
comet nuclear magnitude M2 18.0   1.5 13 from 221 observations
comet nuclear magnitude slope K2 5.0   n/a 13 from 221 observations

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