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195P/Hill
Classification: Jupiter-family Comet          SPK-ID: 1002431
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2454492.5 (2008-Jan-27.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3150495598886983 1.8102e-07  
a 6.479618405208505 8.3496e-07 au
q 4.438217478400857 1.1431e-06 au
i 36.3675062092703 1.9229e-05 deg
node 243.2611482002586 2.469e-05 deg
peri 249.6537017235729 8.2979e-05 deg
M 338.4621088324292 4.5928e-05 deg
tp 2454852.931923672737
(2009-Jan-21.43192367)
0.00075968 TDB
period 6024.521691220893
16.49
0.0011645
3.188e-06
d
yr
n .05975578119746874 1.155e-08 deg/d
Q 8.521019332016154 1.098e-06 au
  Orbit Determination Parameters
   # obs. used (total)      252  
   data-arc span      7042 days (19.28 yr)  
   first obs. used      1993-02-26  
   last obs. used      2012-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .72818  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:27:52  

Additional Information
 Earth MOID = 3.64379 au 
 Jupiter MOID = .170396 au 
 T_jup = 2.509 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 8.4   0.4 38 2 parameter fit from 96 observations, autocmod 2.9c
comet total magnitude slope K1 10.25   n/a 38 autocmod 2.9c
comet nuclear magnitude M2 12.5   0.7 38 from 111 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 38 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 38 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2009.1   195P/2006 W4       
 1992.6   195P/1993 D1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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