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217P/LINEAR
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000345
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 128 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6896124377441168 6.6756e-08  
a 3.944212683566493 4.456e-08 au
q 1.224234559870939 2.6141e-07 au
i 12.88038541924797 4.9927e-06 deg
node 125.6209072877638 1.9564e-05 deg
peri 246.764171333605 2.992e-05 deg
M 41.52383981229764 2.0806e-06 deg
tp 2455083.484816862273
(2009-Sep-08.98481686)
1.635e-05 TDB
period 2861.138720952209
7.83
4.8486e-05
1.327e-07
d
yr
n .1258240285113436 2.1323e-09 deg/d
Q 6.664190807262048 7.529e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.584372802014197E-9 3.258E-11
A2 [EST] -1.224085867174653E-10 1.263E-11
A3 [EST] -2.204927992313826E-12 2.272E-11
DT [EST] 22.37552737625511 1.943
  Orbit Determination Parameters
   # obs. used (total)      3268  
   data-arc span      6117 days (16.75 yr)  
   first obs. used      2001-06-21  
   last obs. used      2018-03-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59383  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Sep-20 18:19:41  

Additional Information
 Earth MOID = .307519 au 
 Jupiter MOID = .655396 au 
 T_jup = 2.549 
[ hide covariance matrix ]
Orbit Covariance (10×10)
  e q tp node peri i A1 A2 A3 DT
e 4.456299611013201E-15 -1.742674548834943E-14 -4.47506033240209E-13 1.106620763064557E-13 -1.409262040602338E-12 -5.70246993175165E-14 6.976393381622886E-19 -7.063059905178324E-19 -9.065872905432216E-20 9.380410624555644E-8
q -1.742674548834943E-14 6.833505356491116E-14 1.733930428008652E-12 -4.636782418315367E-13 5.545200817334162E-12 2.334681305365089E-13 -3.062421273301334E-18 2.705152387243814E-18 3.816250103328724E-19 -3.533497671199117E-7
tp -4.47506033240209E-13 1.733930428008652E-12 2.673332406032362E-10 -3.668522924135913E-12 2.670200489653493E-10 -1.472865128154098E-11 7.137955749636157E-17 8.959702322203226E-17 3.498083887187229E-18 -1.421526462250493E-5
node 1.106620763064557E-13 -4.636782418315367E-13 -3.668522924135913E-12 3.827393059274209E-10 -4.039288382268229E-10 -5.607506565257149E-11 4.996914114990988E-17 8.201839115828628E-19 -2.643459936925061E-16 -9.35876129364614E-7
peri -1.409262040602338E-12 5.545200817334162E-12 2.670200489653493E-10 -4.039288382268229E-10 8.951789995080403E-10 6.165515177144707E-11 -1.815369333893542E-16 2.193611359273107E-16 2.851963905602119E-16 -2.952263314913317E-5
i -5.70246993175165E-14 2.334681305365089E-13 -1.472865128154098E-11 -5.607506565257149E-11 6.165515177144707E-11 2.492708755305058E-11 -2.810088623879583E-17 1.418253472530005E-18 7.877385755936187E-17 2.318530315139426E-7
A1 6.976393381622886E-19 -3.062421273301334E-18 7.137955749636157E-17 4.996914114990988E-17 -1.815369333893542E-16 -2.810088623879583E-17 1.061293595985414E-21 1.536967451629462E-23 -5.141176579821343E-23 -1.785963587985655E-11
A2 -7.063059905178324E-19 2.705152387243814E-18 8.959702322203226E-17 8.201839115828628E-19 2.193611359273107E-16 1.418253472530005E-18 1.536967451629462E-23 1.5962983923354E-22 9.36910807021894E-24 -2.379380990754105E-11
A3 -9.065872905432216E-20 3.816250103328724E-19 3.498083887187229E-18 -2.643459936925061E-16 2.851963905602119E-16 7.877385755936187E-17 -5.141176579821343E-23 9.36910807021894E-24 5.163727309121077E-22 -5.645897862864838E-13
DT 9.380410624555644E-8 -3.533497671199117E-7 -1.421526462250493E-5 -9.35876129364614E-7 -2.952263314913317E-5 2.318530315139426E-7 -1.785963587985655E-11 -2.379380990754105E-11 -5.645897862864838E-13 3.776209385418463

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 13.9   1. 128 2 parameter fit from 546 observations, autocmod 2.6n
comet total magnitude slope K1 7.   n/a 128 autocmod 2.6n

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2009.7   217P/2009 F3       
 2001.9   217P/2001 MD7       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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