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

[ show orbit diagram ]
:
Orbital Elements at Epoch 2456445.5 (2013-Jun-02.0) TDB
Reference: JPL K154/3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .641180538092906 2.1482e-08  
a 3.463763991035476 2.1391e-08 au
q 1.242865931436518 7.5569e-08 au
i 7.043449510613212 2.2483e-06 deg
node 50.16855470774527 2.6745e-05 deg
peri 12.74507421242449 2.6815e-05 deg
M 237.4045226131268 2.377e-06 deg
tp 2457247.349411419490
(2015-Aug-12.84941142)
1.8921e-05 TDB
period 2354.620205116352
6.45
2.1812e-05
5.972e-08
d
yr
n .1528908990153725 1.4163e-09 deg/d
Q 5.684662050634436 3.5106e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.140096931854859E-9 1.167E-11
A2 [EST] -3.411223057087054E-11 2.996E-12
A3 [EST] 3.941666150189035E-10 1.177E-11
DT [EST] 31.84696986913966 .6294
  Orbit Determination Parameters
   # obs. used (total)      5962  
   data-arc span      8382 days (22.95 yr)  
   first obs. used      1995-07-03  
   last obs. used      2018-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .73445  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Jan-19 13:03:02  

Additional Information
 Earth MOID = .256437 au 
 Jupiter MOID = .0841861 au 
 T_jup = 2.745 
[ hide covariance matrix ]
Orbit Covariance (10×10)
  e q tp node peri i A1 A2 A3 DT
e 4.614977630128522E-16 -1.615104201984824E-15 1.196026396626596E-13 -5.348336137025068E-16 3.847728321746744E-14 1.927128906553102E-15 1.675458286339582E-19 -2.888724364517055E-20 -8.411655751114849E-21 1.708937201784224E-9
q -1.615104201984824E-15 5.710699244920572E-15 -3.256857546899466E-13 2.750494146298673E-15 -1.323334099499486E-13 -6.835244657382747E-15 -6.271435630274013E-19 1.009822629116421E-19 2.369180197658717E-20 -4.539126731783603E-9
tp 1.196026396626596E-13 -3.256857546899466E-13 3.57995716222153E-10 -2.661093195407662E-11 6.82938396885769E-11 -8.644241168989461E-13 -1.132691021281627E-17 -1.974401257545518E-17 -9.173491523122256E-18 5.119562865721395E-6
node -5.348336137025068E-16 2.750494146298673E-15 -2.661093195407662E-11 7.152753560027604E-10 -7.11406042550618E-10 1.507782704720444E-11 3.41484165405039E-18 5.247200852570656E-18 -5.485384032435238E-17 -1.252844083292394E-6
peri 3.847728321746744E-14 -1.323334099499486E-13 6.82938396885769E-11 -7.11406042550618E-10 7.190544761849016E-10 -1.474743463988722E-11 1.240662371956935E-17 -8.209882978439084E-18 5.283819678613465E-17 1.456643028946261E-6
i 1.927128906553102E-15 -6.835244657382747E-15 -8.644241168989461E-13 1.507782704720444E-11 -1.474743463988722E-11 5.054758520334592E-12 1.299182677939917E-18 2.64814759164983E-19 -2.572092535870213E-18 -1.037733486183506E-7
A1 1.675458286339582E-19 -6.271435630274013E-19 -1.132691021281627E-17 3.41484165405039E-18 1.240662371956935E-17 1.299182677939917E-18 1.361779582938339E-22 -1.562098573138461E-23 -2.342350039270982E-24 -5.65686612548828E-13
A2 -2.888724364517055E-20 1.009822629116421E-19 -1.974401257545518E-17 5.247200852570656E-18 -8.209882978439084E-18 2.64814759164983E-19 -1.562098573138461E-23 8.976521485470133E-24 5.830649095689491E-25 -1.614856840989245E-12
A3 -8.411655751114849E-21 2.369180197658717E-20 -9.173491523122256E-18 -5.485384032435238E-17 5.283819678613465E-17 -2.572092535870213E-18 -2.342350039270982E-24 5.830649095689491E-25 1.385336970776832E-22 -8.282292313088707E-14
DT 1.708937201784224E-9 -4.539126731783603E-9 5.119562865721395E-6 -1.252844083292394E-6 1.456643028946261E-6 -1.037733486183506E-7 -5.65686612548828E-13 -1.614856840989245E-12 -8.282292313088707E-14 .3960963365730185

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 11.0   1. K154/3 2 parameter fit from 923 observations, autocmod 2.9a
comet total magnitude slope K1 12.25   n/a K154/3 autocmod 2.9a
comet nuclear magnitude M2 13.9   0.9 K154/3 from 4038 observations, autocmod 2.9a
comet nuclear magnitude slope K2 5.   n/a K154/3 autocmod 2.9a
comet nuclear phase coefficient PC 0.03   n/a K154/3 autocmod 2.9a
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 LCDB (Rev. 2020-October); Warner et al., 2009 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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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