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 ]  
141P/Machholz 2
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1003394
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ 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 2458056.5 (2017-Oct-30.0) TDB
Reference: JPL K202/1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7474981240949333 2.5988e-07  
a 3.034101569792488 1.8345e-07 au
q .7661163380591107 8.2995e-07 au
i 13.54663883449047 3.0603e-05 deg
node 242.9380791875331 0.00015299 deg
peri 152.6978460775968 0.00017163 deg
M 148.4220306178664 1.4487e-05 deg
tp 2457260.634886616497
(2015-Aug-26.13488662)		 0.00013792 TDB
period 1930.383512645272
5.29		 0.00017507
4.793e-07		 d
yr
n .1864914394687714 1.6913e-08 deg/d
Q 5.302086801525864 3.2057e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.243341786977169E-9 3.606E-10
A2 [EST] -1.21344728161611E-9 1.14E-10
   Orbit Determination Parameters
   # obs. used (total)      405  
   data-arc span      2052 days (5.62 yr)  
   first obs. used      2015-05-24  
   last obs. used      2021-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .90117  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Jan-19 12:45:25  

Additional Information
 Earth MOID = .113932 au 
 Jupiter MOID = .571756 au 
 T_jup = 2.701 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 17.9   1. K202/1 2 parameter fit from 130 observations, autocmod 2.9a
comet total magnitude slope K1 11.5   n/a K202/1 autocmod 2.9a

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-28 06:40 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin