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C/2018 F1 (Grauer)
Classification: Comet          SPK-ID: 1003565
Ephemeris | Orbit Diagram | Orbital Elements | 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.


Orbital Elements at Epoch 2458547.5 (2019-Mar-05.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9907167820783891 1.9342e-05  
a 322.4149158619284 0.67245 au
q 2.993047925124127 6.5876e-06 au
i 46.07060739100022 5.2062e-05 deg
node 177.2859127423493 3.3132e-05 deg
peri 71.62834901545773 0.00033745 deg
M .01377620568176867 4.2964e-05 deg
tp 2458466.581423832429
(2018-Dec-14.08142383)
0.0017976 TDB
period 2114565.366781429
5789.36
6615.4
18.11
d
yr
n .0001702477519283097 5.3262e-07 deg/d
Q 641.8367837987327 1.3387 au
  Orbit Determination Parameters
   # obs. used (total)      184  
   data-arc span      500 days (1.37 yr)  
   first obs. used      2017-12-22  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .33116  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 00:54:19  

Additional Information
 Earth MOID = 2.31937 au 
 Jupiter MOID = .727401 au 
 T_jup = 1.501 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 13.7   0.6 11 2 parameter fit from 130 observations, autocmod 2.8
comet total magnitude slope K1 5.   n/a 11 autocmod 2.8

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2018.9   C/2018 F1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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