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369P/Hill
Classification: Jupiter-family Comet          SPK-ID: 1003054
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2457084.5 (2015-Mar-03.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5546408041493838 5.138e-07  
a 4.384891617439918 2.848e-07 au
q 1.95285180463515 2.204e-06 au
i 10.31843725985807 1.9512e-05 deg
node 47.36949962879564 9.9126e-05 deg
peri 13.33273109236419 0.00040645 deg
M 218.121823941581 0.00010149 deg
tp 2458406.251517450283
(2018-Oct-14.75151745)
0.00082529 TDB
period 3353.796612709318
9.18
0.00032674
8.946e-07
d
yr
n .1073410351229316 1.0458e-08 deg/d
Q 6.816931430244686 4.4276e-07 au
  Orbit Determination Parameters
   # obs. used (total)      404  
   data-arc span      3372 days (9.23 yr)  
   first obs. used      2010-01-06  
   last obs. used      2019-04-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65919  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-15 08:31:23  

Additional Information
 Earth MOID = .967217 au 
 Jupiter MOID = .262873 au 
 T_jup = 2.690 
[ 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 12.8   0.7 22 from 178 observations, assumed slope, autocmod 2.6q
comet total magnitude slope K1 14.   n/a 22 autocmod 2.6q
comet nuclear magnitude M2 16.4   0.6 22 from 166 observations, autocmod 2.6q
comet nuclear magnitude slope K2 5.   n/a 22 autocmod 2.6q
comet nuclear phase coefficient PC 0.03   n/a 22 autocmod 2.6q

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2018.8   369P/2018 P1       
 2009.6   369P/2010 A1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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