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104P/Kowal 2
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000056
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL K163/6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6386695859566606 1.0383e-05  
a 3.263280361225389 7.9121e-05 au
q 1.179122444061068 5.6702e-06 au
i 10.25426992139334 0.00010851 deg
node 235.4207637354207 0.00093497 deg
peri 200.6739477005111 0.0007769 deg
M 20.87399485947891 0.00068891 deg
tp 2457475.651571746826
(2016-Mar-28.15157175)
0.00059915 TDB
period 2153.178367327846
5.90
0.078309
0.0002144
d
yr
n .1671946948114522 6.0807e-06 deg/d
Q 5.34743827838971 0.00012965 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.200273266754491E-8 2.289E-9
A2 [EST] -1.05737556441448E-10 3.003E-10
A3 [EST] 4.296959281020488E-9 6.48E-10
DT [EST] 61.95449595727518 4.789
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      4685 days (12.83 yr)  
   first obs. used      2003-08-31  
   last obs. used      2016-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      4  
   norm. resid. RMS      .71301  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2016-Aug-16 17:08:46  

Additional Information
 Earth MOID = .20043 au 
 Jupiter MOID = .168654 au 
 T_jup = 2.794 
[ show covariance matrix ]

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 13.4   1. K163/6 2 parameter fit from 36 observations, autocmod 2.6g
comet total magnitude slope K1 16.   n/a K163/6 autocmod 2.6g
diameter diameter 2.0 km n/a Lamy,P.L ,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (2004) Comets II, pp. 223-264  

104P/Kowal 2          Discovered 1979-Jan-27 by Kowal, Charles T. at Palomar Mountain Observatory, California
discovered on plate/photo taken on discovery date as well as 1/28,29
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1992.7   104P/1991 X1   1991 XX   1991f1 
 1980.9   104P/1979 B1   1979 II   1979a 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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