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51P/Harrington-D
Classification: Jupiter-family Comet          SPK-ID: 1003396
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2453462.5 (2005-Apr-02.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5524980225643705 4.8188e-07  
a 3.678826527281956 8.8918e-08 au
q 1.646282145601325 1.7709e-06 au
i 5.408234874963838 2.8857e-05 deg
node 84.56410029483207 0.00049273 deg
peri 269.1090870083974 0.00063666 deg
M 196.7024333471584 3.184e-05 deg
tp 2454631.567543506659
(2008-Jun-14.06754351)
0.00022984 TDB
period 2577.284672937737
7.06
9.3441e-05
2.558e-07
d
yr
n .1396818922566483 5.0642e-09 deg/d
Q 5.711370908962587 1.3805e-07 au
  Orbit Determination Parameters
   # obs. used (total)      235  
   data-arc span      5132 days (14.05 yr)  
   first obs. used      2001-10-19  
   last obs. used      2015-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .83302  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2018-Feb-28 15:28:40  

Additional Information
 Earth MOID = .651987 au 
 Jupiter MOID = .371052 au 
 T_jup = 2.810 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 8.6   0.6 2 2 parameter fit from 111 observations, autocmod 2.6m
comet total magnitude slope K1 20.   n/a 2 autocmod 2.6m
comet nuclear magnitude M2 14.7   0.4 2 from 25 observations, autocmod 2.6m
comet nuclear magnitude slope K2 5.   n/a 2 autocmod 2.6m
comet nuclear phase coefficient PC 0.03   n/a 2 autocmod 2.6m

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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