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68P/Klemola
Classification: Jupiter-family Comet          SPK-ID: 1000051
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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:
Orbital Elements at Epoch 2456958.5 (2014-Oct-28.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .639165406955733 6.4719e-08  
a 4.896703506708852 4.0984e-08 au
q 1.766900017101724 3.1852e-07 au
i 11.14012569130488 5.2958e-06 deg
node 175.359524548697 5.7917e-05 deg
peri 153.9590295085953 6.6552e-05 deg
M 191.9778748365149 8.2889e-06 deg
tp 2458805.717831401058
(2019-Nov-18.21783140)
9.181e-05 TDB
period 3957.802692099859
10.84
4.9688e-05
1.36e-07
d
yr
n .09095956216276101 1.1419e-09 deg/d
Q 8.02650699631598 6.7179e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.02666266512886E-9 6.739E-11
A2 [EST] -1.941340229369521E-11 3.538E-13
  Orbit Determination Parameters
   # obs. used (total)      1906  
   data-arc span      19784 days (54.17 yr)  
   first obs. used      1965-11-18  
   last obs. used      2020-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58262  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2020-Feb-10 16:18:41  

Additional Information
 Earth MOID = .763126 au 
 Jupiter MOID = .175062 au 
 T_jup = 2.527 
[ 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 11.1   0.7 38 2 parameter fit from 982 observations, autocmod 2.8
comet total magnitude slope K1 12.25   n/a 38 autocmod 2.8
comet nuclear magnitude M2 14.1   0.8 38 from 643 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 38 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 38 autocmod 2.8
diameter diameter 4.4 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (to be published)  

68P/Klemola          Discovered 1965-Nov-(mid) by Klemola, A. R. at Yale-Columbia Southern Station, Argentina
discovered on plate/photo taken on 10/28-31,11/1-2
Reference: comet.disLast Updated: 2003-08-29

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Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1987.4       1987 XIV   1987i 
 1976.5   68P/1976 P1   1976 X   1976j 
 1965.7   68P/1965 U1   1965 VI   1965j 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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