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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 2457164.5 (2015-May-22.0) TDB
Reference: JPL K154/6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5477021603251646 1.678e-07  
a 3.445295576093534 4.5999e-07 AU
q 1.558299746108373 5.4868e-07 AU
i 4.7369272527781 1.0829e-05 deg
node 120.8675101420663 0.00021723 deg
peri 162.8994173381672 0.00021377 deg
M 335.9427621614425 1.8981e-05 deg
tp 2457320.592277614028
(2015-Oct-25.09227761)
0.00011743 JED
period 2335.813459473181
6.40
0.00046779
1.281e-06
d
yr
n .15412189639544 3.0866e-08 deg/d
Q 5.332291406078695 7.1193e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.51550674516204E-9 2.239E-11
A2 [EST] -1.081183638377749E-10 1.335E-11
A3 [EST] -1.530778842831824E-9 6.529E-11
DT [EST] -246.5760928763341 3.305
  Orbit Determination Parameters
   # obs. used (total)      3118  
   data-arc span      4890 days (13.39 yr)  
   first obs. used      2001-12-19  
   last obs. used      2015-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .66252  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-May-12 21:24:47  

Additional Information
 Earth MOID = .542428 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 12.5 mag 1. K154/6 2 parameter fit from 677 observations, autocmod 2.6
comet total magnitude slope K1 7.   n/a K154/6 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 
 1964.7       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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