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152P/Helin-Lawrence
Classification: Jupiter-family Comet          SPK-ID: 1000145
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455022.5 (2009-Jul-10.0) TDB
Reference: JPL 60 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3082627744445086 1.0649e-07  
a 4.497815029541231 8.9706e-08 au
q 3.111306089596642 5.0378e-07 au
i 9.870826456722094 1.1514e-05 deg
node 91.959319552 7.1196e-05 deg
peri 163.9173475991133 7.8837e-05 deg
M 246.8326260213012 2.1813e-05 deg
tp 2456117.765861733523
(2012-Jul-09.26586173)
0.00020841 TDB
period 3484.181848191383
9.54
0.00010423
2.854e-07
d
yr
n .1033241132884249 3.0911e-09 deg/d
Q 5.88432396948582 1.1736e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 8.686584565358988E-8 7.779E-9
A2 [EST] 3.384785842819168E-8 2.785E-10
  Orbit Determination Parameters
   # obs. used (total)      711  
   data-arc span      10198 days (27.92 yr)  
   first obs. used      1993-04-21  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .81243  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:27:41  

Additional Information
 Earth MOID = 2.09812 au 
 Jupiter MOID = .340589 au 
 T_jup = 2.900 
[ 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 10.9   1. 60 2 parameter fit from 396 observations, autocmod 2.9c
comet total magnitude slope K1 9.25   n/a 60 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2003.0   152P/2001 Y1       
 1993.4   152P/1993 K2   1993 XI   1993l 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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