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249P/LINEAR (2006 U1)
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 2456706.5 (2014-Feb-18.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8176146053220722 7.1203e-08  
a 2.772269859405042 1.6614e-08 au
q .505621532461312 1.956e-07 au
i 8.414541643537341 1.1043e-05 deg
node 240.2607872290354 4.4738e-05 deg
peri 64.35955483228172 4.4919e-05 deg
M 221.7925712168137 1.5513e-05 deg
tp 2457353.762681956450
(2015-Nov-27.26268196)
7.2148e-05 TDB
period 1685.977139983299
4.62
1.5156e-05
4.149e-08
d
yr
n .2135260268140801 1.9195e-09 deg/d
Q 5.038918186348773 3.0198e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -6.490252454483443E-11 3.936E-11
A2 [EST] -7.016881944780768E-13 2.232E-13
  Orbit Determination Parameters
   # obs. used (total)      834  
   data-arc span      5112 days (14.00 yr)  
   first obs. used      2006-10-19  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52281  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-18 17:47:03  

Additional Information
 Earth MOID = .0504724 au 
 Jupiter MOID = .744221 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 18.4   1. 40 2 parameter fit from 476 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 40 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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