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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 2454798.5 (2008-Nov-28.0) TDB
Reference: JPL 57 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .308498185874755 1.0815e-07  
a 4.497467351036076 1.1396e-07 au
q 3.110006832210506 5.0534e-07 au
i 9.872526672652972 1.201e-05 deg
node 91.96227447131072 7.1385e-05 deg
peri 163.9068736754597 7.9067e-05 deg
M 223.7203760481314 2.2208e-05 deg
tp 2456117.299827224025
(2012-Jul-08.79982722)
0.00020829 TDB
period 3483.777868130367
9.54
0.00013241
3.625e-07
d
yr
n .103336094787582 3.9276e-09 deg/d
Q 5.884927869861646 1.4911e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 7.676437114502543E-8 7.866E-9
A2 [EST] 3.638067069878656E-8 4.354E-10
  Orbit Determination Parameters
   # obs. used (total)      674  
   data-arc span      10128 days (27.73 yr)  
   first obs. used      1993-04-21  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .79193  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-30 21:13:00  

Additional Information
 Earth MOID = 2.09487 au 
 Jupiter MOID = .340563 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. 57 2 parameter fit from 360 observations, autocmod 2.8
comet total magnitude slope K1 9.25   n/a 57 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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