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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 2457380.5 (2015-Dec-24.0) TDB
Reference: JPL K154/8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5477531209893566 1.3647e-07  
a 3.445531902348308 2.3818e-07 au
q 1.558231049368627 5.2516e-07 au
i 4.737006894576866 7.4255e-06 deg
node 120.8675954576381 0.00019848 deg
peri 162.9028630022056 0.00019455 deg
M 9.231823882440029 1.4423e-05 deg
tp 2457320.594341006394
(2015-Oct-25.09434101)
8.9256e-05 JED
period 2336.053797421243
6.40
0.00024222
6.632e-07
d
yr
n .1541060400224524 1.5979e-08 deg/d
Q 5.332832755327988 3.6864e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.485320640224813E-9 2.427E-11
A2 [EST] -1.529208033847523E-10 1.343E-11
A3 [EST] -1.335592979918509E-9 5.305E-11
DT [EST] -224.5307870404239 3.195
  Orbit Determination Parameters
   # obs. used (total)      3616  
   data-arc span      5068 days (13.88 yr)  
   first obs. used      2001-12-19  
   last obs. used      2015-11-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .68697  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-Dec-14 12:49:30  

Additional Information
 Earth MOID = .544039 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. K154/8 2 parameter fit from 749 observations, autocmod 2.6
comet total magnitude slope K1 8.   n/a K154/8 autocmod 2.6
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 
 1983.8       1983 XIII   1982k 
 1977.4       1977 V   1976b 
 1971.0       1970 XI   1970c 
 1964.6       1964 III   1963i 
 1958.3       1958 I   1958d 
 1951.9       1951 VII   1951e 
 1945.5       1945 V   1945b 
 1939.1       1939 II   1939e 
 1932.7       1932 III   1932e 
 1926.3       1926 II   1926c 
 1919.9   22P/1919 O1   1919 I   1919a 
 1907.1   22P/1906 Q1   1906 IV   1906e 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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