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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


:
Orbital Elements at Epoch 2456453.5 (2013-Jun-10.0) TDB
Reference: JPL K215/2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6411775687705257 2.1329e-08  
a 3.463755494188835 1.9981e-08 au
q 1.242873167609287 7.5309e-08 au
i 7.043377575687031 2.2459e-06 deg
node 50.16819532855173 2.5882e-05 deg
peri 12.74581389071025 2.5821e-05 deg
M 238.6261456597125 2.3052e-06 deg
tp 2457247.356328367746
(2015-Aug-12.85632837)
1.777e-05 TDB
period 2354.611541058453
6.45
2.0374e-05
5.578e-08
d
yr
n .1528914615946253 1.3229e-09 deg/d
Q 5.684637820768383 3.2792e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.13581083398996E-9 1.157E-11
A2 [EST] -3.490009015126876E-11 2.97E-12
A3 [EST] 3.883274264199108E-10 1.168E-11
DT [EST] 32.18738317016349 .6168
  Orbit Determination Parameters
   # obs. used (total)      5991  
   data-arc span      9463 days (25.91 yr)  
   first obs. used      1995-07-03  
   last obs. used      2021-05-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .73624  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Jun-01 11:57:44  

Additional Information
 Earth MOID = .255328 au 
 Jupiter MOID = .0841791 au 
 T_jup = 2.745 
[ 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 11.0   1. K215/2 2 parameter fit from 973 observations, autocmod 2.9c
comet total magnitude slope K1 12.25   n/a K215/2 autocmod 2.9c
comet nuclear magnitude M2 13.9   0.9 K215/2 from 4040 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a K215/2 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a K215/2 autocmod 2.9c
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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