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
JPL Small-Body Database Browser
Search: [ help ]  
C/2020 S8 (Lemmon)
Classification: Comet          SPK-ID: 1003737
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

[ hide orbit diagram ]

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 2459254.5 (2021-Feb-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9913830924475 7.1548e-06  
a 274.3271593630181 0.22791 au
q 2.363851771371061 2.2766e-06 au
i 108.5175107457731 3.4853e-05 deg
node 24.05235540110787 2.1708e-05 deg
peri 160.3329177909225 0.00017747 deg
M 359.9867837932443 1.642e-05 deg
tp 2459315.426462077082
(2021-Apr-10.92646208)
0.00045441 TDB
period 1659593.161124374
4543.72
2068.2
5.662
d
yr
n .0002169206335823294 2.7033e-07 deg/d
Q 546.2904669546651 0.45386 au
  Orbit Determination Parameters
   # obs. used (total)      318  
   data-arc span      277 days  
   first obs. used      2020-07-29  
   last obs. used      2021-05-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .51458  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-02 23:42:49  

Additional Information
 Earth MOID = 1.39886 au 
 Jupiter MOID = 3.00804 au 
 T_jup = -0.585 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 9.4   0.6 7 2 parameter fit from 280 observations, autocmod 2.9c
comet total magnitude slope K1 17.25   n/a 7 autocmod 2.9c
comet nuclear magnitude M2 14.3   0.05 7 from 3 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 7 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 7 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2021.3   C/2020 S8       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-07 08:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin