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JPL Small-Body Database Browser
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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 2457800.5 (2017-Feb-16.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8194628611875435 3.1667e-07  
a 2.762901124050504 7.501e-07 au
q .4988062637577979 7.6454e-07 au
i 8.394918480966822 3.4688e-05 deg
node 239.1680994491346 4.7834e-05 deg
peri 65.60613205939141 0.00011276 deg
M 95.99916518565495 6.0002e-05 deg
tp 2457353.187126535254
(2015-Nov-26.68712653)
0.00012421 TDB
period 1677.437862463532
4.59
0.00068311
1.87e-06
d
yr
n .2146130167059029 8.7398e-08 deg/d
Q 5.026995984343211 1.3648e-06 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 3.738992230119317E-10 1.643E-10
A2 [EST] -5.57053175505016E-12 1.286E-12
  Orbit Determination Parameters
   # obs. used (total)      484  
   data-arc span      3425 days (9.38 yr)  
   first obs. used      2006-10-19  
   last obs. used      2016-03-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .47402  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2017-Jun-08 17:39:16  

Additional Information
 Earth MOID = .0455209 au 
 Jupiter MOID = .75663 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 15.9   2. 24 from 150 observations, assumed slope, autocmod 2.6i
comet total magnitude slope K1 16.   n/a 24 autocmod 2.6i

[ 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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