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222P/LINEAR
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000530
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2454620.5 (2008-Jun-03.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7268241441104772 8.7922e-08  
a 2.857451014258531 3.6084e-08 au
q .7805866264824591 2.5912e-07 au
i 5.146523755949469 6.7296e-06 deg
node 7.132797132343198 0.00013097 deg
peri 345.4267483330132 0.00012753 deg
M 267.1227145852772 2.3095e-06 deg
tp 2455075.670000326911
(2009-Sep-01.17000033)
1.4306e-05 TDB
period 1764.276371623075
4.83
3.3419e-05
9.15e-08
d
yr
n .2040496635279495 3.8651e-09 deg/d
Q 4.934315402034603 6.2311e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 8.96284537690192E-11 8.257E-11
A2 [EST] -4.370495715662282E-12 3.002E-13
  Orbit Determination Parameters
   # obs. used (total)      239  
   data-arc span      5283 days (14.46 yr)  
   first obs. used      2004-12-07  
   last obs. used      2019-05-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .79702  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:27:57  

Additional Information
 Earth MOID = .0628239 au 
 Jupiter MOID = .50935 au 
 T_jup = 2.835 
[ 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 19.3   2. 37 2 parameter fit from 73 observations, autocmod 2.9c
comet total magnitude slope K1 11.   n/a 37 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2009.7   222P/2009 MB9       
 2004.8   222P/2004 X1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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