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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 2454966.5 (2009-May-15.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4716280786475535 2.6365e-07  
a 3.67605145279527 4.7357e-08 au
q 1.942322369103889 9.7678e-07 au
i 10.96356761313876 2.7465e-05 deg
node 103.6316048201185 3.7969e-05 deg
peri 296.7577602796273 8.2537e-05 deg
M 145.8825021238078 2.9599e-05 deg
tp 2453923.290575517170
(2006-Jul-06.79057552)
0.00021658 TDB
period 2574.369011679632
7.05
4.9747e-05
1.362e-07
d
yr
n .1398400922193824 2.7023e-09 deg/d
Q 5.409780536486651 6.9692e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -2.063493437381039E-10 3.144E-12
  Orbit Determination Parameters
   # obs. used (total)      660  
   data-arc span      7601 days (20.81 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .7287  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-06 07:15:58  

Additional Information
 Earth MOID = .979683 au 
 Jupiter MOID = .650564 au 
 T_jup = 2.871 
[ 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 39 2 parameter fit from 253 observations, autocmod 2.8
comet total magnitude slope K1 11.   n/a 39 autocmod 2.8
comet nuclear magnitude M2 15.9   0.7 39 from 361 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 39 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 39 autocmod 2.8

[ show close-approach data ]
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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