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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455060.5 (2009-Aug-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4718277941627114 2.5789e-07  
a 3.675528946178986 4.3485e-08 au
q 1.94131223112216 9.5342e-07 au
i 10.9638577411145 2.6303e-05 deg
node 103.6253506064653 3.7783e-05 deg
peri 296.7577759411362 7.3889e-05 deg
M 159.0334005708058 2.6728e-05 deg
tp 2453923.490632964811
(2006-Jul-06.99063296)
0.00020065 TDB
period 2573.820157674529
7.05
4.5676e-05
1.251e-07
d
yr
n .139869912404938 2.4822e-09 deg/d
Q 5.409745661235812 6.4002e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -1.898138955951686E-10 2.39E-12
  Orbit Determination Parameters
   # obs. used (total)      681  
   data-arc span      7624 days (20.87 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .76462  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Sep-02 22:14:34  

Additional Information
 Earth MOID = .977325 au 
 Jupiter MOID = .651159 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 13.4   0.6 41 2 parameter fit from 271 observations, autocmod 2.8
comet total magnitude slope K1 11.25   n/a 41 autocmod 2.8
comet nuclear magnitude M2 15.9   0.7 41 from 361 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 41 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 41 autocmod 2.8

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1922-Jul-09 14:30 00:06 Jupiter 1.00526727568719 1.00523035994609 1.00530419325246 5.12467129476414 4.95752832531708 2423245.104357895 5.54986529937918 2881.54295294255 354.314313179647 -53.4787199967202 239763.357635339 T 41 CATAB v2.0f-lin.ifort 2020-Sep-02 22:14:45 2020-Sep-02 22:14
1925-Oct-27 00:01 01:12 Jupiter 1.95773804634389 1.95770231471088 1.95777378644366 2.8871396323103 2.73317909256769 2424450.500843040 72.0932544917297 7015.29018676952 107.683491922521 88.583674776994 272618.543374635 T 41 CATAB v2.0f-lin.ifort 2020-Sep-02 22:14:45 2020-Sep-02 22:14
1983-Apr-01 06:35 00:02 Jupiter 1.00063992523892 1.00062674802911 1.00065310255612 6.1005232882254 5.96015291141584 2445425.774212442 2.49016813481891 858.012888700043 199.282754263099 -43.2596188245797 348877.23966286 T 41 CATAB v2.0f-lin.ifort 2020-Sep-02 22:14:45 2020-Sep-02 22:14
2018-Jul-16 08:44 00:02 Jupiter 1.99826446971055 1.99824956755955 1.99827937187359 9.02172124507021 8.97461397793522 2458315.864093264 1.77269170959463 784.506340734631 167.662361140615 -20.0909492181801 454803.229729665 T 41 CATAB v2.0f-lin.ifort 2020-Sep-02 22:14:45 2020-Sep-02 22:14
2065-Jan-11 18:30 00:05 Jupiter 1.17852495898034 1.17849191741649 1.17855800138432 5.54223598881412 5.41100282181946 2475297.270515689 4.93832376772887 2316.93179074396 351.028375812365 -48.1441459200999 257939.31680149 T 41 CATAB v2.0f-lin.ifort 2020-Sep-02 22:14:45 2020-Sep-02 22:14
2125-Jul-25 18:38 00:07 Jupiter 1.26147771287027 1.26144705899443 1.26150836689734 7.02563528134066 6.92940443802609 2497406.276598400 6.6392488332797 1684.11778313735 274.609189241264 -26.5568244296327 201151.382511962 T 41 CATAB v2.0f-lin.ifort 2020-Sep-02 22:14:45 2020-Sep-02 22:14
2161-Jan-09 11:22 00:06 Jupiter 1.65404458888846 1.65399796237838 1.65409121554662 8.17610824616232 8.11323379672845 2510357.973770848 6.08379455638193 2455.74998473659 274.394035200958 -20.4330165132523 169733.276542126 T 41 CATAB v2.0f-lin.ifort 2020-Sep-02 22:14:45 2020-Sep-02 22:14

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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