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C/2018 Y1 (Iwamoto)
Classification: Comet          SPK-ID: 1003600
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458545.5 (2019-Mar-03.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9910793921481993 2.2105e-06  
a 144.2720530425061 0.035762 au
q 1.286994409166389 1.6274e-07 au
i 160.4035376693905 1.2712e-05 deg
node 147.4835613131589 9.7672e-06 deg
peri 358.0572189618863 3.7579e-05 deg
M .01363287672835521 5.0877e-06 deg
tp 2458521.530622689491
(2019-Feb-07.03062269)
4.0639e-05 TDB
period 632953.4113541649
1732.93
235.35
0.6444
d
yr
n .0005687622399092566 2.1148e-07 deg/d
Q 287.2571116758459 0.071205 au
  Orbit Determination Parameters
   # obs. used (total)      2750  
   data-arc span      348 days  
   first obs. used      2018-12-19  
   last obs. used      2019-12-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .50806  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:33:49  

Additional Information
 Earth MOID = .298944 au 
 Jupiter MOID = 1.50657 au 
 T_jup = -1.286 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 13.6   1. 17 2 parameter fit from 1118 observations, autocmod 2.9c
comet total magnitude slope K1 5.25   n/a 17 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2019.1   C/2018 Y1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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