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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456812.5 (2014-Jun-04.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8183256633459267 4.8808e-08  
a 2.771095686017719 1.415e-08 au
q .5034369705622334 1.3429e-07 au
i 8.404533159206611 1.0775e-05 deg
node 240.0164808208808 4.3379e-05 deg
peri 64.62667876075373 4.3529e-05 deg
M 244.4299932239343 1.5269e-05 deg
tp 2457353.401702265261
(2015-Nov-26.90170227)
7.1394e-05 TDB
period 1684.906129605082
4.61
1.2905e-05
3.533e-08
d
yr
n .2136617546072901 1.6365e-09 deg/d
Q 5.038754401473206 2.5729e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -2.863816797410243E-11 2.527E-11
A2 [EST] -7.485397805791388E-13 2.197E-13
  Orbit Determination Parameters
   # obs. used (total)      867  
   data-arc span      5205 days (14.25 yr)  
   first obs. used      2006-10-19  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51652  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-30 21:13:01  

Additional Information
 Earth MOID = .0490851 au 
 Jupiter MOID = .745343 au 
 T_jup = 2.708 
[ 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 18.3   1. 44 2 parameter fit from 505 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 44 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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