Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2455175.5 (2009-Dec-10.0) TDB
Reference: JPL K195/4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5379646359162272 1.5897e-07  
a 3.471773069494447 2.6536e-08 au
q 1.604081934180104 5.5533e-07 au
i 30.46080528503473 1.4827e-05 deg
node 84.10775788873617 1.4914e-05 deg
peri .06835401381334011 6.7451e-05 deg
M 170.1790324298553 1.7533e-05 deg
tp 2454058.562245215683
(2006-Nov-19.06224522)
0.00011669 TDB
period 2362.791619984626
6.47
2.7089e-05
7.417e-08
d
yr
n .1523621452501776 1.7468e-09 deg/d
Q 5.33946420480879 4.0811e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 5.552165724843267E-10 9.21E-11
A2 [EST] -1.686727120299737E-10 2.427E-13
  Orbit Determination Parameters
   # obs. used (total)      988  
   data-arc span      9694 days (26.54 yr)  
   first obs. used      1993-07-20  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .86747  
   source      ORB  
   producer      Shantanu Naidu  
   solution date      2020-Feb-11 16:54:52  

Additional Information
 Earth MOID = .619836 au 
 Jupiter MOID = .0518579 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 13.7   0.9 K195/4 2 parameter fit from 379 observations, autocmod 2.8
comet total magnitude slope K1 17.5   n/a K195/4 autocmod 2.8
comet nuclear magnitude M2 17.2   0.6 K195/4 from 381 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a K195/4 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a K195/4 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

[ show close-approach data ]
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-21 04:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin