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344P/Read
Classification: Jupiter-family Comet          SPK-ID: 1001667
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455525.5 (2010-Nov-25.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4219536899598873 1.1444e-06  
a 4.887307748937658 2.3902e-07 au
q 2.825090210303863 5.4593e-06 au
i 3.483121626937129 2.6716e-05 deg
node 273.2924389437579 0.00045445 deg
peri 140.3699667993773 0.000476 deg
M 162.3148856963061 5.5398e-05 deg
tp 2453746.160553401185
(2006-Jan-10.66055340)
0.00053565 TDB
period 3946.416855285079
10.80
0.0002895
7.926e-07
d
yr
n .09122199027654276 6.6919e-09 deg/d
Q 6.949525287571453 3.3987e-07 au
  Orbit Determination Parameters
   # obs. used (total)      532  
   data-arc span      23841 days (65.27 yr)  
   first obs. used      1951-12-01  
   last obs. used      2017-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61812  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:28:30  

Additional Information
 Earth MOID = 1.83724 au 
 Jupiter MOID = .121709 au 
 T_jup = 2.819 
[ 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 6.2   0.6 29 2 parameter fit from 259 observations, autocmod 2.9c
comet total magnitude slope K1 24.   n/a 29 autocmod 2.9c
comet nuclear magnitude M2 14.9   0.5 29 from 210 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 29 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 29 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2016.8   344P/2016 Q1       
 2006.0   344P/2005 S3       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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