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249P/LINEAR
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1002424
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 2456512.5 (2013-Aug-08.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8167721727100546 1.3086e-07  
a 2.773415229266398 2.4087e-08 au
q .5081668466313277 3.5928e-07 au
i 8.424828822914737 1.1147e-05 deg
node 240.4413527534983 4.5511e-05 deg
peri 64.18021605017182 4.5826e-05 deg
M 180.317295521578 1.6681e-05 deg
tp 2457354.524146491745
(2015-Nov-28.02414649)
7.5104e-05 TDB
period 1687.022096071749
4.62
2.1978e-05
6.017e-08
d
yr
n .2133937669448813 2.78e-09 deg/d
Q 5.038663611901468 4.3761e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -1.370357209892418E-10 7.417E-11
A2 [EST] -6.030436340073431E-13 2.389E-13
  Orbit Determination Parameters
   # obs. used (total)      781  
   data-arc span      5036 days (13.79 yr)  
   first obs. used      2006-10-19  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52148  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-06 07:15:58  

Additional Information
 Earth MOID = .0514942 au 
 Jupiter MOID = .744013 au 
 T_jup = 2.710 
[ 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 18.4   1. 36 2 parameter fit from 429 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 36 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2011.3   249P/2011 A4       
 2006.7   249P/2006 U1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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