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76P/West-Kohoutek-Ikemura
Classification: Jupiter-family Comet          SPK-ID: 1000104
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 2455405.5 (2010-Jul-28.0) TDB
Reference: JPL K195/5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5381528754379419 1.4545e-07  
a 3.471399869854633 2.4136e-08 au
q 1.603256048097465 5.0676e-07 au
i 30.46719089375004 1.3749e-05 deg
node 84.10840740889606 1.4661e-05 deg
peri .05192976656452167 6.3862e-05 deg
M 205.2729364882836 1.6648e-05 deg
tp 2456420.857950339087
(2013-May-08.35795034)
0.00010823 TDB
period 2362.410646372748
6.47
2.4638e-05
6.746e-08
d
yr
n .1523867158966393 1.5893e-09 deg/d
Q 5.339543691611801 3.7125e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 4.499682409458798E-10 7.978E-11
A2 [EST] -1.686711266767998E-10 2.374E-13
  Orbit Determination Parameters
   # obs. used (total)      1068  
   data-arc span      9743 days (26.67 yr)  
   first obs. used      1993-07-20  
   last obs. used      2020-03-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .84852  
   source      ORB  
   producer      Shantanu Naidu  
   solution date      2020-Apr-07 11:13:34  

Additional Information
 Earth MOID = .620335 au 
 Jupiter MOID = .0502013 au 
 T_jup = 2.686 
[ 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 14.8   0.9 K195/5 2 parameter fit from 428 observations, autocmod 2.8
comet total magnitude slope K1 12.25   n/a K195/5 autocmod 2.8
comet nuclear magnitude M2 17.2   0.6 K195/5 from 392 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a K195/5 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a K195/5 autocmod 2.8
diameter diameter 0.66 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver, H.A. (2004) Comets II, pp. 223-264  

76P/West-Kohoutek-Ikemura          Discovered 1975-Jan by West, Richard M. at European Southern Obs., La Silla, Chile
discovered on plate/photo taken on 10/15
Reference: comet.disLast Updated: 2003-08-29

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Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1993.9       1993 XXI   1993o 
 1987.5       1987 XV   1987x 
 1981.0   76P/1980 V2   1981 VIII   1980r 
 1974.5   76P/1975 D1   1975 IV   1975b 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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