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345P/LINEAR
Classification: Encke-type Comet          SPK-ID: 1003478
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456648.5 (2013-Dec-22.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2195786496813614 1.7532e-05  
a 4.042149932170815 1.3053e-06 au
q 3.15458010825514 7.0653e-05 au
i 2.724635866454826 0.00012719 deg
node 154.5405959245129 0.0017518 deg
peri 196.8167630911489 0.019934 deg
M 246.2411685895993 0.012039 deg
tp 2457586.493169466685
(2016-Jul-16.99316947)
0.098962 TDB
period 2968.363307019113
8.13
0.0014378
3.936e-06
d
yr
n .121278955021688 5.8745e-08 deg/d
Q 4.929719756086489 1.5919e-06 au
  Orbit Determination Parameters
   # obs. used (total)      129  
   data-arc span      3038 days (8.32 yr)  
   first obs. used      2008-09-02  
   last obs. used      2016-12-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .57995  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-28 08:15:32  

Additional Information
 Earth MOID = 2.14939 au 
 Jupiter MOID = .505746 au 
 T_jup = 3.005 
[ 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
absolute magnitude H 14.4   n/a MPO149062  
comet total magnitude M1 12.4   0.6 8 from 108 observations, assumed slope, autocmod 2.6m
comet total magnitude slope K1 10.   n/a 8 autocmod 2.6m
comet nuclear magnitude M2 15.2   0.3 8 from 17 observations, autocmod 2.6m
comet nuclear magnitude slope K2 5.   n/a 8 autocmod 2.6m
comet nuclear phase coefficient PC 0.03   n/a 8 autocmod 2.6m

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2016.5   345P/2016 Q3       
 2008.4   345P/2008 SH164       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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