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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 2453559.5 (2005-Jul-08.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5385099078192322 1.9566e-07  
a 3.473126291275564 3.5761e-08 au
q 1.602813372316208 6.8681e-07 au
i 30.46026426137926 1.7324e-05 deg
node 84.11690777311844 1.5305e-05 deg
peri .1518811608244371 8.1843e-05 deg
M 283.889666137379 2.1249e-05 deg
tp 2454059.327810297202
(2006-Nov-19.82781030)
0.00013882 TDB
period 2364.173201917371
6.47
3.6514e-05
9.997e-08
d
yr
n .152273107447473 2.3518e-09 deg/d
Q 5.343439210234919 5.5018e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -2.121527145121372E-9 2.051E-10
A2 [EST] -1.71346177700699E-10 4.064E-13
  Orbit Determination Parameters
   # obs. used (total)      687  
   data-arc span      9573 days (26.21 yr)  
   first obs. used      1993-07-20  
   last obs. used      2019-10-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .87019  
   source      ORB  
   producer      Shantanu Naidu  
   solution date      2019-Oct-10 10:10:59  

Additional Information
 Earth MOID = .617174 au 
 Jupiter MOID = .0561707 au 
 T_jup = 2.685 
[ 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 14.9   1. 21 2 parameter fit from 176 observations, autocmod 2.8
comet total magnitude slope K1 10.   n/a 21 autocmod 2.8
comet nuclear magnitude M2 17.1   0.6 21 from 353 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 21 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 21 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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