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C/2017 F1 (Lemmon)
Classification: Hyperbolic Comet          SPK-ID: 1003511
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457914.5 (2017-Jun-10.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.00410815241111 3.4418e-05  
a -1095.333743178876 9.1724 au
q 4.499797958010393 2.0656e-05 au
i 146.4798027072322 9.1748e-05 deg
node 158.7395389992406 0.00016519 deg
peri 64.81279889140275 0.0011563 deg
M -.004730576418393899 5.9584e-05 deg
tp 2458088.492163735265
(2017-Nov-30.99216374)
0.0085491 TDB
period n/a
n/a
n/a
n/a
d
yr
n 2.718844525430256E-5 3.4152e-07 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      89  
   data-arc span      407 days (1.11 yr)  
   first obs. used      2017-02-04  
   last obs. used      2018-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .56828  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:33:32  

Additional Information
 Earth MOID = 3.6757 au 
 Jupiter MOID = .540411 au 
 T_jup = -2.181 
[ 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 8.3   0.6 9 2 parameter fit from 71 observations, autocmod 2.9c
comet total magnitude slope K1 13.75   n/a 9 autocmod 2.9c

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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