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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 2457262.5 (2015-Aug-28.0) TDB
Reference: JPL K084/23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6408776396893091 5.7949e-08  
a 3.461952647920129 4.7141e-07 AU
q 1.243264606204923 9.4266e-08 AU
i 7.040303514383711 1.3286e-05 deg
node 50.13578167835024 6.3614e-05 deg
peri 12.79599950907877 6.5459e-05 deg
M 2.281926144296383 6.1304e-06 deg
tp 2457247.586513160822
(2015-Aug-13.08651316)
3.813e-05 JED
period 2352.773456548275
6.44
0.00048056
1.316e-06
d
yr
n .1530109067653932 3.1253e-08 deg/d
Q 5.680640689635336 7.7353e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.079330625287023E-9 2.251E-11
A2 [EST] 1.078289963993059E-10 2.114E-13
A3 [EST] 1.960799785526921E-10 3.667E-11
  Orbit Determination Parameters
   # obs. used (total)      4072  
   data-arc span      9872 days (27.03 yr)  
   first obs. used      1988-07-06  
   last obs. used      2015-07-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .67134  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-Aug-18 21:54:42  

Additional Information
 Earth MOID = .258213 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. K084/23 2 parameter fit from 515 observations, autocmod 2.6
comet total magnitude slope K1 11.   n/a K084/23 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-July); 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.]

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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