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C/2018 B1 (Lemmon)
Classification: Hyperbolic Comet          SPK-ID: 1003560
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.


Orbital Elements at Epoch 2458393.5 (2018-Oct-02.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.002991467621466 1.0239e-05  
a -1710.444843568408 5.8518 au
q 5.116740367838301 9.1169e-06 au
i 162.4235729580755 1.6101e-05 deg
node 133.1680602301745 0.00013021 deg
peri 68.34969068315887 0.00019884 deg
M .002585153247590205 1.3258e-05 deg
tp 2458207.956463362069
(2018-Mar-30.45646336)
0.0013297 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.393286607786756E-5 7.1501e-08 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      297  
   data-arc span      1018 days (2.79 yr)  
   first obs. used      2017-01-16  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .53517  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-08 14:18:20  

Additional Information
 Earth MOID = 4.17852 au 
 Jupiter MOID = .975011 au 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 1.048430578438743E-10 8.371788459500006E-11 6.505020023178194E-9 -1.615379478928966E-10 6.38744224966135E-10 -4.159049287157595E-11
q 8.371788459500006E-11 8.311729041800535E-11 8.348664949582898E-9 -1.254798875398392E-10 9.361793519298855E-10 -3.574675103804935E-11
tp 6.505020023178194E-9 8.348664949582898E-9 1.768067797523263E-6 -5.486608456363913E-9 2.050714755256295E-7 -2.256744576564271E-9
node -1.615379478928966E-10 -1.254798875398392E-10 -5.486608456363913E-9 1.695591964136332E-8 1.543833753094854E-8 6.200884948596106E-11
peri 6.38744224966135E-10 9.361793519298855E-10 2.050714755256295E-7 1.543833753094854E-8 3.953756019559366E-8 -2.355354747484409E-10
i -4.159049287157595E-11 -3.574675103804935E-11 -2.256744576564271E-9 6.200884948596106E-11 -2.355354747484409E-10 2.592381455662989E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 9.7   0.7 13 from 254 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 8.   n/a 13 autocmod 2.8
comet nuclear magnitude M2 11.5   0.5 13 from 18 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 13 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 13 autocmod 2.8
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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