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73P/Schwassmann-Wachmann 3-C
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000081
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2455980.5 (2012-Feb-23.0) TDB
Reference: JPL K114/1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6922258013072282 1.2472e-07  
a 3.063468722115394 2.7904e-07 AU
q .9428566311694347 4.4635e-07 AU
i 11.37915705677313 2.9524e-06 deg
node 69.84321690348189 1.1269e-05 deg
peri 198.8705914205202 2.585e-05 deg
M 23.73073531906494 1.9723e-05 deg
tp 2455851.399686348570
(2011-Oct-16.89968635)
9.155e-05 JED
period 1958.477573055924
5.36
0.00026759
7.326e-07
d
yr
n .1838162483720819 2.5115e-08 deg/d
Q 5.184080813061352 4.722e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 6.544631766354118E-9 3.712E-11
A2 [EST] 4.832373496932443E-10 1.635E-11
DT [EST] -12.17581160807467 .3937
  Orbit Determination Parameters
   # obs. used (total)      3223  
   data-arc span      5853 days (16.02 yr)  
   first obs. used      1995-12-15  
   last obs. used      2011-12-24  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .85683  
   data source      ORB  
   producer      Alan B. Chamberlin  
   solution date      2012-Feb-22 16:52:19  

Additional Information
 Earth MOID = .0383732 AU 
 T_jup = 2.784 
[ 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
comet total magnitude M1 13.2 mag 1. K114/1 2 parameter fit from 624 observations, autocmod 2.5b
comet total magnitude slope K1 9.   n/a K114/1 autocmod 2.5b

73P/Schwassmann-Wachmann 3-C          Discovered 1930-May-02 by Schwassmann, A. and Wachmann, A. A. at Hamburg Observatory, Germany
discovered on plate/photo taken on discovery date
Reference: comet.disLast Updated: 2003-08-29

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