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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 2457164.5 (2015-May-22.0) TDB
Reference: JPL K084/22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6408895564455845 3.1762e-08  
a 3.462057168694966 2.6732e-07 AU
q 1.243260885460793 1.1743e-07 AU
i 7.040238805457465 9.066e-06 deg
node 50.13613368039552 7.0991e-05 deg
peri 12.79538014444266 7.1545e-05 deg
M 347.2875579524029 1.3479e-05 deg
tp 2457247.585696490531
(2015-Aug-13.08569649)
9.4675e-05 JED
period 2352.880007208757
6.44
0.00027251
7.461e-07
d
yr
n .1530039776346568 1.7721e-08 deg/d
Q 5.680853451929138 4.3864e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.080417365339841E-9 2.397E-11
A2 [EST] 1.076337222594866E-10 4.079E-13
A3 [EST] 1.899718133707674E-10 3.821E-11
  Orbit Determination Parameters
   # obs. used (total)      3690  
   data-arc span      9805 days (26.84 yr)  
   first obs. used      1988-07-06  
   last obs. used      2015-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .691  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-May-12 21:40:51  

Additional Information
 Earth MOID = .256052 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. K084/22 2 parameter fit from 502 observations, autocmod 2.6
comet total magnitude slope K1 11.   n/a K084/22 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 LCDB (Rev. 2015-May); 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 
 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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