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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2195792138176453 1.7533e-05  
a 4.042150004640189 1.3053e-06 au
q 3.154577884488305 7.0657e-05 au
i 2.72462435377573 0.00012718 deg
node 154.5404352363199 0.0017518 deg
peri 196.8155819356357 0.019933 deg
M 246.2420112394069 0.012039 deg
tp 2457586.486246661691
(2016-Jul-16.98624666)
0.098958 TDB
period 2968.363386846223
8.13
0.0014378
3.936e-06
d
yr
n .1212789517601774 5.8744e-08 deg/d
Q 4.929722124792074 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      3  
   norm. resid. RMS      .57676  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:28:30  

Additional Information
 Earth MOID = 2.14939 au 
 Jupiter MOID = .505741 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 9 from 108 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 10.   n/a 9 autocmod 2.9c
comet nuclear magnitude M2 15.2   0.3 9 from 17 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 9 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 9 autocmod 2.9c

[ 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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