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218P/LINEAR
Classification: Jupiter-family Comet          SPK-ID: 1000437
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455413.5 (2010-Aug-05.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4910536519598606 1.4411e-08  
a 3.34212457714 3.8747e-08 au
q 1.700962098230598 6.0365e-08 au
i 18.17171407980748 1.0239e-05 deg
node 226.6187117822295 2.1229e-05 deg
peri 10.77752231074719 1.4073e-05 deg
M 65.88433022530492 9.5146e-06 deg
tp 2455005.075286974719
(2009-Jun-22.57528697)
5.4285e-05 TDB
period 2231.682346717227
6.11
3.881e-05
1.063e-07
d
yr
n .161313280328428 2.8053e-09 deg/d
Q 4.983287056049402 5.7774e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.439979582654559E-9 9.056E-11
  Orbit Determination Parameters
   # obs. used (total)      707  
   data-arc span      4522 days (12.38 yr)  
   first obs. used      2003-04-29  
   last obs. used      2015-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .74438  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-16 22:44:29  

Additional Information
 Earth MOID = .693094 au 
 Jupiter MOID = .0488543 au 
 T_jup = 2.884 
[ 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 15.5   0.8 43 2 parameter fit from 268 observations, autocmod 2.8
comet total magnitude slope K1 13.5   n/a 43 autocmod 2.8
comet nuclear magnitude M2 18.3   0.7 43 from 402 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 43 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 43 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2009.5   218P/2009 F7       
 2003.4   218P/2003 H4       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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