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P/2005 S2 (Skiff)
Classification: Chiron-type Comet          SPK-ID: 1001666
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2453616.5 (2005-Sep-03.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1967097774760947 0.00047255  
a 7.964788623849381 0.0025249 au
q 6.398036826007839 0.0017744 au
i 3.141048769130812 0.00023608 deg
node 161.2724047500526 0.0022404 deg
peri 229.9331810080294 0.17522 deg
M 346.8132743563561 0.10343 deg
tp 2453917.242135073103
(2006-Jun-30.74213507)
2.4968 TDB
period 8210.314793233218
22.48
3.9041
0.01069
d
yr
n .04384728345577017 2.085e-05 deg/d
Q 9.531540421690924 0.0030216 au
  Orbit Determination Parameters
   # obs. used (total)      90  
   data-arc span      427 days (1.17 yr)  
   first obs. used      2004-09-07  
   last obs. used      2005-11-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      5  
   norm. resid. RMS      .68208  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:30:52  

Additional Information
 Earth MOID = 5.40397 au 
 Jupiter MOID = 1.43581 au 
 T_jup = 3.076 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.9   0.6 10 from 22 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 10.   n/a 10 autocmod 2.9c
comet nuclear magnitude M2 12.1   0.4 10 from 50 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 10 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 10 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2006.5   P/2005 S2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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