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C/2019 U6 (Lemmon)
Classification: Comet          SPK-ID: 1003663
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.


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Orbital Elements at Epoch 2458971.5 (2020-May-02.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9979025211720745 7.137e-07  
a 435.8867445797392 0.14829 au
q .9142632181293939 1.8119e-07 au
i 61.00132392038925 1.9841e-05 deg
node 235.7057163732434 2.1305e-05 deg
peri 329.659153999556 2.069e-05 deg
M 359.9948207129574 2.6436e-06 deg
tp 2459019.321853014053
(2020-Jun-18.82185301)
2.2865e-05 TDB
period 3323983.966007089
9100.57
1696.2
4.644
d
yr
n .0001083037715228354 5.5268e-08 deg/d
Q 870.8592259413491 0.29627 au
  Orbit Determination Parameters
   # obs. used (total)      1035  
   data-arc span      739 days (2.02 yr)  
   first obs. used      2018-11-06  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .76694  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-17 00:12:32  

Additional Information
 Earth MOID = .0284201 au 
 Jupiter MOID = 1.40983 au 
 T_jup = 0.586 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.264   1.1149 8 autocmod 2.8
comet total magnitude M1 13.2   01. 24 2 parameter fit from 811 observations, autocmod 2.8
comet total magnitude slope K1 7.25   n/a 24 autocmod 2.8

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2020.5   C/2019 U6       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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