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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 2454771.5 (2008-Nov-01.0) TDB
Reference: JPL 56 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3085334564082223 1.0869e-07  
a 4.497391555756662 1.1919e-07 au
q 3.109795794237907 5.0594e-07 au
i 9.872747387725829 1.2055e-05 deg
node 91.96245781921567 7.139e-05 deg
peri 163.9054241226952 7.9097e-05 deg
M 220.9349907587471 2.2327e-05 deg
tp 2456117.220428790780
(2012-Jul-08.72042879)
0.00020831 TDB
period 3483.689800963738
9.54
0.00013849
3.792e-07
d
yr
n .1033387071088846 4.1081e-09 deg/d
Q 5.884987317275417 1.5597e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 7.535816712762799E-8 7.88E-9
A2 [EST] 3.690213508917659E-8 4.675E-10
  Orbit Determination Parameters
   # obs. used (total)      670  
   data-arc span      9833 days (26.92 yr)  
   first obs. used      1993-04-21  
   last obs. used      2020-03-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .78883  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-06 08:43:18  

Additional Information
 Earth MOID = 2.09496 au 
 Jupiter MOID = .340517 au 
 T_jup = 2.899 
[ 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 10.8   1. 56 2 parameter fit from 356 observations, autocmod 2.8
comet total magnitude slope K1 9.25   n/a 56 autocmod 2.8

[ 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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