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JPL Small-Body Database Browser
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209P/LINEAR
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000487
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2455947.5 (2012-Jan-21.0) TDB
Reference: JPL 138 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6920214125125672 1.0041e-08  
a 2.931505675420449 1.7288e-08 au
q .9028409771273824 3.3518e-08 au
i 20.61911890702222 3.4831e-06 deg
node 63.60831693350104 1.7942e-06 deg
peri 152.1306549514883 5.215e-06 deg
M 198.3460721040053 2.7344e-07 deg
tp 2456770.724518442640
(2014-Apr-23.22451844)
7.545e-06 TDB
period 1833.304210399538
5.02
1.6218e-05
4.44e-08
d
yr
n .1963667556960141 1.7371e-09 deg/d
Q 4.960170373713515 2.9252e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2794  
   # delay obs. used      9  
   # Doppler obs. used      4  
   data-arc span      5743 days (15.72 yr)  
   first obs. used      2003-12-03  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41972  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:30:50  

Additional Information
 Earth MOID = .0576412 au 
 Jupiter MOID = .461507 au 
 T_jup = 2.789 
[ 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 16.9   2. 138 from 437 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 15.   n/a 138 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2009.3   209P/2008 X2       
 2004.3   209P/2004 CB       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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