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67P/Churyumov-Gerasimenko
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000012
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2456646.5 (2013-Dec-20.0) TDB
Reference: JPL K084/15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6411316148431488 3.2579e-08  
a 3.46340638039073 1.3981e-07 AU
q 1.242907054872756 1.4525e-07 AU
i 7.041832483150398 8.9977e-06 deg
node 50.16006617573287 7.6057e-05 deg
peri 12.76353580659799 7.6352e-05 deg
M 268.103836791589 1.7232e-05 deg
tp 2457247.464038173618
(2015-Aug-12.96403817)
0.00014856 JED
period 2354.255566163842
6.45
0.00014256
3.903e-07
d
yr
n .1529145795274064 9.2593e-09 deg/d
Q 5.683905705908703 2.2945e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.070325605997264E-9 2.338E-11
A2 [EST] 1.062247983455114E-10 6.652E-13
A3 [EST] 1.263714244875916E-10 3.925E-11
  Orbit Determination Parameters
   # obs. used (total)      2884  
   data-arc span      9222 days (25.25 yr)  
   first obs. used      1988-07-06  
   last obs. used      2013-10-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .76288  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2013-Dec-10 10:56:09  

Additional Information
 Earth MOID = .257094 AU 
 T_jup = 2.745 
[ 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 11.4 mag 1. K084/15 2 parameter fit from 496 observations, autocmod 2.5c
comet total magnitude slope K1 11.   n/a K084/15 autocmod 2.5c
diameter diameter 4.0 km n/a Lamy,P.L.;Toth,I.;Fernandez,Y.R.;Weaver,H.A. (2004) Comets II, pp. 223-264  
rotation period rot_per 12.76137 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Lowry, S.; Duddy, S.R.; Rozitis, B.; Green, S.F.; et al. (2012) Astron. Astrophys. 548, A12.]

67P/Churyumov-Gerasimenko          Discovered 1969-Oct-22 by Churyumov, Klim Ivanovic at Alma-Ata Observatory, Russia
discovered on plate/photo taken on 9/11
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1989.8       1989 VI   1988i 
 1983.4       1982 VIII   1982f 
 1976.9   67P/1975 P1   1976 VII   1975i 
 1970.5   67P/1969 R1   1969 IV   1969h 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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