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JPL Small-Body Database Browser
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C/2018 M1 (Catalina)
Classification: Halley-type Comet*          SPK-ID: 1003578
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458346.5 (2018-Aug-16.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9387011723601153 1.9231e-05  
a 21.26435270732251 0.006739 au
q 1.303479891479878 4.5321e-06 au
i 37.25702358922189 9.8989e-05 deg
node 339.463319054704 0.00023875 deg
peri 14.13280481613599 0.00021629 deg
M .3716552984763011 0.00017889 deg
tp 2458309.524461674984
(2018-Jul-10.02446167)
0.00024303 TDB
period 35815.96670780293
98.06
17.026
0.04661
d
yr
n .01005138303084165 4.7781e-06 deg/d
Q 41.22522552316514 0.013065 au
  Orbit Determination Parameters
   # obs. used (total)      171  
   data-arc span      206 days  
   first obs. used      2018-06-25  
   last obs. used      2019-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .6043  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Oct-09 09:50:27  

Additional Information
 Earth MOID = .309039 au 
 Jupiter MOID = 2.13443 au 
 T_jup = 1.354 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 15.1   0.8 6 from 91 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 15.   n/a 6 autocmod 2.8
comet nuclear magnitude M2 18.1   0.4 6 from 28 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 6 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 6 autocmod 2.8

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2018.5   C/2018 M1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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