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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 2456799.5 (2014-May-22.0) TDB
Reference: JPL K154/5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5473381591556946 1.1455e-07  
a 3.449680130638605 6.7975e-07 AU
q 1.561538558258895 2.6166e-07 AU
i 4.73691231296802 8.6156e-06 deg
node 120.8724870940184 7.1132e-05 deg
peri 162.761199036012 7.5899e-05 deg
M 279.8391470155533 8.6342e-05 deg
tp 2457320.606507777525
(2015-Oct-25.10650778)
0.00071492 JED
period 2340.273784715189
6.41
0.00069171
1.894e-06
d
yr
n .1538281556419742 4.5467e-08 deg/d
Q 5.337821703018315 1.0518e-06 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.427598041114031E-9 2.81E-11
A2 [EST] -9.406785946176775E-11 1.373E-11
A3 [EST] -1.397782669080353E-9 7.896E-11
DT [EST] -251.410318485143 5.013
  Orbit Determination Parameters
   # obs. used (total)      2486  
   data-arc span      4483 days (12.27 yr)  
   first obs. used      2001-12-19  
   last obs. used      2014-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      1  
   fit RMS      .67426  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2014-May-12 11:17:28  

Additional Information
 Earth MOID = .545402 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 12.7 mag 1. K154/5 2 parameter fit from 514 observations, autocmod 2.5c
comet total magnitude slope K1 7.   n/a K154/5 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 
 1983.8       1983 XIII   1982k 
 1977.4       1977 V   1976b 
 1971.0       1970 XI   1970c 
 1964.6       1964 III   1963i 
 1958.1       1958 I   1958d 
 1951.7       1951 VII   1951e 
 1945.3       1945 V   1945b 
 1938.9       1939 II   1939e 
 1932.5       1932 III   1932e 
 1926.1       1926 II   1926c 
 1919.7   22P/1919 O1   1919 I   1919a 
 1906.9   22P/1906 Q1   1906 IV   1906e 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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