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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.


Orbital Elements at Epoch 2455954.5 (2012-Jan-28.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4730133082310582 2.1804e-07  
a 3.671129311268368 3.7013e-08 au
q 1.934636290801311 7.9931e-07 au
i 10.97336923304177 2.4426e-05 deg
node 103.5740200060653 3.4813e-05 deg
peri 296.9004152120003 6.8155e-05 deg
M 284.0636073888286 2.4683e-05 deg
tp 2456496.432768063467
(2013-Jul-22.93276806)
0.00017237 TDB
period 2569.20021868601
7.03
3.8855e-05
1.064e-07
d
yr
n .1401214266532011 2.1191e-09 deg/d
Q 5.407622331735424 5.4521e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -1.687656101487694E-10 1.616E-12
  Orbit Determination Parameters
   # obs. used (total)      922  
   data-arc span      7756 days (21.23 yr)  
   first obs. used      1999-10-10  
   last obs. used      2021-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .80587  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-14 17:13:18  

Additional Information
 Earth MOID = .970791 au 
 Jupiter MOID = .654522 au 
 T_jup = 2.870 
[ 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 13.1   0.6 46 2 parameter fit from 494 observations, autocmod 2.8
comet total magnitude slope K1 11.75   n/a 46 autocmod 2.8
comet nuclear magnitude M2 15.9   0.7 46 from 364 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 46 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 46 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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