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22P/Kopff
Classification: Jupiter-family Comet          SPK-ID: 1000054
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2455964.5 (2012-Feb-07.0) TDB
Reference: JPL K223/6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5442231253585762 7.8025e-08  
a 3.457354594785569 9.3121e-08 au
q 1.575782271738533 3.0859e-07 au
i 4.724287250090257 5.3531e-06 deg
node 120.8724470398713 6.1603e-05 deg
peri 162.6855843008794 6.3211e-05 deg
M 151.5079518148796 7.7878e-06 deg
tp 2454976.294561956115
(2009-May-24.79456196)
4.4246e-05 TDB
period 2348.087697274646
6.43
9.4865e-05
2.597e-07
d
yr
n .1533162498222878 6.1941e-09 deg/d
Q 5.338926917832605 1.438e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 5.247053926774395E-10 6.29E-11
A2 [EST] -3.950240876320405E-10 2.957E-12
  Orbit Determination Parameters
   # obs. used (total)      3563  
   data-arc span      4798 days (13.14 yr)  
   first obs. used      2008-01-30  
   last obs. used      2021-03-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67013  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Mar-29 09:58:52  

Additional Information
 Earth MOID = .561609 au 
 Jupiter MOID = .0776009 au 
 T_jup = 2.868 
[ 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 11.7   1. K223/6 2 parameter fit from 673 observations, autocmod 2.9c
comet total magnitude slope K1 9.   n/a K223/6 autocmod 2.9c
diameter diameter 3.0 km 0.4 Earth, Moon, and Planets, v. 89, Issue 1, p. 117-134 (2002)  
geometric albedo albedo 0.05   0.01 n/a  

22P/Kopff          Discovered 1906-Aug-22 by Kopff at Konigstuhl Observatory, Germany
discovered on plate/photo taken on discovery date
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1996.5           1994s 
 1990.1       1990 I   1988k 
 1983.7       1983 XIII   1982k 
 1977.3       1977 V   1976b 
 1970.8       1970 XI   1970c 
 1964.4       1964 III   1963i 
 1958.0       1958 I   1958d 
 1951.5       1951 VII   1951e 
 1945.1       1945 V   1945b 
 1938.7       1939 II   1939e 
 1932.3       1932 III   1932e 
 1925.8       1926 II   1926c 
 1919.4   22P/1919 O1   1919 I   1919a 
 1906.5   22P/1906 Q1   1906 IV   1906e 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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