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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 2456981.5 (2014-Nov-20.0) TDB
Reference: JPL K084/21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6409739314162571 3.3193e-08  
a 3.462817302992186 1.2487e-07 AU
q 1.243241682517044 1.4595e-07 AU
i 7.040200902346087 8.48e-06 deg
node 50.14210951437195 8.1839e-05 deg
peri 12.78560606538363 8.2116e-05 deg
M 319.3033467788339 1.8653e-05 deg
tp 2457247.571887218705
(2015-Aug-13.07188722)
0.00013614 JED
period 2353.654952366357
6.44
0.00012731
3.486e-07
d
yr
n .1529536007977963 8.2734e-09 deg/d
Q 5.682392923467328 2.0491e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.085259451686372E-9 2.503E-11
A2 [EST] 1.073852622154103E-10 5.683E-13
A3 [EST] 1.958760302847E-10 3.874E-11
  Orbit Determination Parameters
   # obs. used (total)      3631  
   data-arc span      9605 days (26.30 yr)  
   first obs. used      1988-07-06  
   last obs. used      2014-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .68789  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2014-Nov-10 13:30:50  

Additional Information
 Earth MOID = .257189 AU 
 T_jup = 2.746 
[ 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. K084/21 2 parameter fit from 501 observations, autocmod 2.6
comet total magnitude slope K1 11.   n/a K084/21 autocmod 2.6
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. 2014-Mar-01) 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 
 1977.0   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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