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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.


Orbital Elements at Epoch 2458974.5 (2020-May-05.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9979018125508604 7.1022e-07  
a 435.7392660067604 0.14747 au
q .9142626590326809 1.8053e-07 au
i 61.00132776817308 1.9678e-05 deg
node 235.7057036871522 2.1264e-05 deg
peri 329.6592322074137 2.0533e-05 deg
M 359.9951431549351 2.4662e-06 deg
tp 2459019.321895828560
(2020-Jun-18.82189583)		 2.2778e-05 TDB
period 3322297.146148963
9095.95		 1686.6
4.618		 d
yr
n .0001083587602684166 5.5008e-08 deg/d
Q 870.5642693544881 0.29463 au
   Orbit Determination Parameters
   # obs. used (total)      1048  
   data-arc span      753 days (2.06 yr)  
   first obs. used      2018-11-06  
   last obs. used      2020-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .76554  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-30 21:12:45  

Additional Information
 Earth MOID = .028445 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. 26 2 parameter fit from 824 observations, autocmod 2.8
comet total magnitude slope K1 7.5   n/a 26 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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