Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
C/2018 R5 (Lemmon)
Classification: Halley-type Comet*          SPK-ID: 1003588
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458380.5 (2018-Sep-19.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8415681023585918 0.00013767  
a 22.85669057472917 0.02016 au
q 3.621228861556831 5.4117e-05 au
i 103.7580805941406 0.0012322 deg
node 171.1415653526412 0.00057013 deg
peri 178.0117256674235 0.0020042 deg
M 358.9809770463146 0.0013644 deg
tp 2458493.479569695943
(2019-Jan-09.97956970)
0.0097887 TDB
period 39913.37481009775
109.28
52.806
0.1446
d
yr
n .009019532968906528 1.1933e-05 deg/d
Q 42.09215228790151 0.037125 au
  Orbit Determination Parameters
   # obs. used (total)      187  
   data-arc span      131 days  
   first obs. used      2018-07-05  
   last obs. used      2018-11-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      5  
   norm. resid. RMS      .48235  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:33:46  

Additional Information
 Earth MOID = 2.61566 au 
 Jupiter MOID = 1.34921 au 
 T_jup = -0.311 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 14.4   0.6 6 2 parameter fit from 155 observations, autocmod 2.9c
comet total magnitude slope K1 4.5   n/a 6 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2019.0   C/2018 R5       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-18 21:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin