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178P/Hug-Bell
Classification: Jupiter-family Comet          SPK-ID: 1000283
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 2455358.5 (2010-Jun-11.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4723505506655432 2.4315e-07  
a 3.674208404192663 4.0582e-08 au
q 1.938694041212292 8.9624e-07 au
i 10.96586102164971 2.5024e-05 deg
node 103.6036316946317 3.7791e-05 deg
peri 296.7840020085558 6.946e-05 deg
M 200.7138885027002 2.6009e-05 deg
tp 2456496.702449212128
(2013-Jul-23.20244921)
0.00017609 TDB
period 2572.433201266967
7.04
4.262e-05
1.167e-07
d
yr
n .1399453248475777 2.3186e-09 deg/d
Q 5.409722767173034 5.9751e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -1.789336057724743E-10 1.868E-12
  Orbit Determination Parameters
   # obs. used (total)      753  
   data-arc span      7678 days (21.02 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .77593  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-18 17:46:45  

Additional Information
 Earth MOID = .974007 au 
 Jupiter MOID = .652425 au 
 T_jup = 2.870 
[ hide covariance matrix ]
Orbit Covariance (7×7)
  e q tp node peri i A2
e 5.912225044696705E-14 -2.178609581872451E-13 1.076117548027019E-11 -7.190495810532479E-13 -4.554354267219835E-12 -8.445581141200879E-13 3.708163303088184E-20
q -2.178609581872451E-13 8.032526606025849E-13 -4.134195040755939E-11 2.682574299588626E-12 1.612108646766393E-11 3.131824540388255E-12 -1.345457928534877E-19
tp 1.076117548027019E-11 -4.134195040755939E-11 3.100941834407247E-8 -4.810489844041815E-10 8.542554438664408E-9 -8.757481489556084E-10 -1.132913283742041E-16
node -7.190495810532479E-13 2.682574299588626E-12 -4.810489844041815E-10 1.428165115028945E-9 -1.44640532699204E-9 -2.304635537177398E-10 1.813113174287151E-18
peri -4.554354267219835E-12 1.612108646766393E-11 8.542554438664408E-9 -1.44640532699204E-9 4.824747314288605E-9 8.391395827695512E-11 -3.744206175353718E-17
i -8.445581141200879E-13 3.131824540388255E-12 -8.757481489556084E-10 -2.304635537177398E-10 8.391395827695512E-11 6.262210118669712E-10 -2.303215248243114E-18
A2 3.708163303088184E-20 -1.345457928534877E-19 -1.132913283742041E-16 1.813113174287151E-18 -3.744206175353718E-17 -2.303215248243114E-18 3.487588585313941E-24

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 13.1   0.6 43 2 parameter fit from 333 observations, autocmod 2.8
comet total magnitude slope K1 12.   n/a 43 autocmod 2.8
comet nuclear magnitude M2 15.9   0.7 43 from 361 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 43 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 43 autocmod 2.8

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Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2006.5   178P/2006 O1       
 1999.5   178P/1999 X1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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