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

[ show orbit diagram ]
:
Orbital Elements at Epoch 2456660.5 (2014-Jan-03.0) TDB
Reference: JPL K154/3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5466404892364216 1.0504e-07  
a 3.452217942044868 3.4309e-07 AU
q 1.565095837254709 2.639e-07 AU
i 4.734957796869111 8.2184e-06 deg
node 120.8648470806403 6.9886e-05 deg
peri 162.688723168077 7.7163e-05 deg
M 258.5243759579046 3.8938e-05 deg
tp 2457320.896807182685
(2015-Oct-25.39680718)
0.00035065 JED
period 2342.856748406327
6.41
0.00034926
9.562e-07
d
yr
n .1536585624558059 2.2906e-08 deg/d
Q 5.339340046835028 5.3063e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.48438979803288E-9 2.098E-11
A2 [EST] -3.505366183500966E-10 1.001E-11
A3 [EST] -8.878245855936961E-10 1.752E-11
DT [EST] -173.4258625163201 4.378
  Orbit Determination Parameters
   # obs. used (total)      2908  
   data-arc span      6607 days (18.09 yr)  
   first obs. used      1995-11-28  
   last obs. used      2013-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .72233  
   data source      ORB  
   producer      Alan B. Chamberlin  
   solution date      2014-Jan-14 09:28:15  

Additional Information
 Earth MOID = .547438 AU 
 T_jup = 2.867 
[ 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 12.0 mag 1. K154/3 2 parameter fit from 604 observations, autocmod 2.5c
comet total magnitude slope K1 8.   n/a K154/3 autocmod 2.5c
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 
 1996.6           1994s 
 1990.2       1990 I   1988k 
 1983.7       1983 XIII   1982k 
 1977.3       1977 V   1976b 
 1970.9       1970 XI   1970c 
 1964.5       1964 III   1963i 
 1958.1       1958 I   1958d 
 1951.7       1951 VII   1951e 
 1945.3       1945 V   1945b 
 1938.8       1939 II   1939e 
 1932.4       1932 III   1932e 
 1926.0       1926 II   1926c 
 1919.6   22P/1919 O1   1919 I   1919a 
 1906.8   22P/1906 Q1   1906 IV   1906e 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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