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C/2018 B1 (Lemmon)
Classification: Hyperbolic Comet          SPK-ID: 1003560
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 2458412.5 (2018-Oct-21.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.00296990247976 1.0002e-05  
a -1722.857293595447 5.7993 au
q 5.116718148521779 8.9742e-06 au
i 162.4235687682425 1.5779e-05 deg
node 133.1688342676005 0.00012333 deg
peri 68.34911227383604 0.00019183 deg
M .00281929417940469 1.4226e-05 deg
tp 2458207.944915244706
(2018-Mar-30.44491524)
0.0012933 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.378256709080279E-5 6.959e-08 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      312  
   data-arc span      1018 days (2.79 yr)  
   first obs. used      2017-01-16  
   last obs. used      2019-10-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .53726  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-02 23:42:38  

Additional Information
 Earth MOID = 4.17906 au 
 Jupiter MOID = .97494 au 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.3   0.6 16 2 parameter fit from 269 observations, autocmod 2.9c
comet total magnitude slope K1 4.5   n/a 16 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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