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178P/Hug-Bell
Classification: Jupiter-family Comet          SPK-ID: 1000283
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456717.5 (2014-Mar-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .47349656065763 8.6248e-07  
a 3.672095028437155 1.6981e-07 AU
q 1.93337066206418 3.1894e-06 AU
i 10.97551298791088 2.8391e-05 deg
node 103.5743827629543 3.8114e-05 deg
peri 296.9514988350351 0.00022023 deg
M 30.94660893387183 4.9399e-05 deg
tp 2456496.557196526243
(2013-Jul-23.05719653)
0.00034799 JED
period 2570.214055456482
7.04
0.00017828
4.881e-07
d
yr
n .1400661548931038 9.7157e-09 deg/d
Q 5.41081939481013 2.5022e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -2.111427158551068E-10 3.408E-12
  Orbit Determination Parameters
   # obs. used (total)      626  
   data-arc span      5229 days (14.32 yr)  
   first obs. used      1999-10-10  
   last obs. used      2014-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .74511  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2014-Feb-19 13:35:05  

Additional Information
 Earth MOID = .969002 AU 
 T_jup = 2.870 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 13.8 mag 0.6 32 2 parameter fit from 244 observations, autocmod 2.5c
comet total magnitude slope K1 10.   n/a 32 autocmod 2.5c
comet nuclear magnitude M2 15.9 mag 0.7 32 from 333 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 32 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 32 autocmod 2.5c

[ 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 | Physical Parameters | Close-Approach Data ]
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