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108P/Ciffreo
Classification: Jupiter-family Comet          SPK-ID: 1000013
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2457164.5 (2015-May-22.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5433862742962028 2.3386e-07  
a 3.742538067328224 2.7472e-07 au
q 1.708894250511029 9.25e-07 au
i 13.09615620875901 1.1589e-05 deg
node 53.65521402800832 2.6025e-05 deg
peri 358.1076586706113 0.0001322 deg
M 29.34077526964776 3.1997e-05 deg
tp 2456948.965472972784
(2014-Oct-18.46547297)
0.00023003 TDB
period 2644.525545651311
7.24
0.00029118
7.972e-07
d
yr
n .1361302788668418 1.4989e-08 deg/d
Q 5.776181884145419 4.24e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.265305592606873E-9 2.083E-10
A2 [EST] -2.624626071368604E-10 1.365E-12
  Orbit Determination Parameters
   # obs. used (total)      1447  
   data-arc span      10718 days (29.34 yr)  
   first obs. used      1985-11-08  
   last obs. used      2015-03-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   norm. resid. RMS      .64765  
   source      ORB  
   producer      Ryan S. Park  
   solution date      2015-May-12 22:00:17  

Additional Information
 Earth MOID = .718333 au 
 T_jup = 2.777 
[ 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 10.4   01. 26 2 parameter fit from 211 observations, autocmod 2.6
comet total magnitude slope K1 21.   n/a 26 autocmod 2.6
comet nuclear magnitude M2 15.9   0.6 26 from 1074 observations, autocmod 2.6
comet nuclear magnitude slope K2 5.   n/a 26 autocmod 2.6
comet nuclear phase coefficient PC 0.03   n/a 26 autocmod 2.6
diameter diameter 3.2 km n/a Scotti,J (1994) BAAS 26:1375  

108P/Ciffreo          Discovered 1985-Nov-08 by Ciffreo, Jacqueline at Caussols
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1993.1   108P/1992 S1   1993 I   1992s 
 1985.8   108P/1985 V1   1985 XVI   1985p 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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