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375P/Hill
Classification: Jupiter-family Comet          SPK-ID: 1002323
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457196.5 (2015-Jun-23.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6600628619783244 4.8294e-07  
a 5.566940727700562 1.3445e-07 au
q 1.892409898510833 2.6845e-06 au
i 17.36960297863376 3.3809e-05 deg
node 359.9745411434779 6.1612e-05 deg
peri 119.4331735354286 0.00034889 deg
M 264.1974146032784 4.873e-05 deg
tp 2458473.227025359509
(2018-Dec-20.72702536)
0.00061689 TDB
period 4797.592123700158
13.14
0.0001738
4.758e-07
d
yr
n .0750376419499265 2.7183e-09 deg/d
Q 9.241471556890291 2.2319e-07 au
  Orbit Determination Parameters
   # obs. used (total)      305  
   data-arc span      4868 days (13.33 yr)  
   first obs. used      2005-12-05  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59345  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-15 08:31:30  

Additional Information
 Earth MOID = .970745 au 
 Jupiter MOID = .00467122 au 
 T_jup = 2.418 
[ 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 13.5   0.6 12 from 233 observations, assumed slope, autocmod 2.6q
comet total magnitude slope K1 16.   n/a 12 autocmod 2.6q
comet nuclear magnitude M2 17.6   0.7 12 from 35 observations, autocmod 2.6q
comet nuclear magnitude slope K2 5.   n/a 12 autocmod 2.6q
comet nuclear phase coefficient PC 0.03   n/a 12 autocmod 2.6q

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2019.0   375P/2018 T1       
 2005.8   375P/2006 D1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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