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/2017 M4 (ATLAS)
Classification: Hyperbolic Comet          SPK-ID: 1003524
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458285.5 (2018-Jun-16.0) TDB
Reference: JPL 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.001084237480781 2.9615e-06  
a -2999.068080311761 8.1905 au
q 3.251702020087642 2.2024e-06 au
i 105.6570899144157 9.3403e-06 deg
node 65.86834588032342 1.5167e-05 deg
peri 167.6525920559625 6.8943e-05 deg
M -.001298259444378556 5.3168e-06 deg
tp 2458501.840038955237
(2019-Jan-18.34003896)
0.00029414 TDB
period n/a
n/a
n/a
n/a
d
yr
n 6.001013268963954E-6 2.4583e-08 deg/d
Q n/a n/a au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 9.025948340894811E-6 2.198E-7
A2 [EST] 8.883206192298023E-7 2.534E-7
A3 [EST] 2.184126710195829E-6 8.185E-8
  Orbit Determination Parameters
   # obs. used (total)      3290  
   data-arc span      1387 days (3.80 yr)  
   first obs. used      2017-06-16  
   last obs. used      2021-04-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .52038  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-02 23:42:38  

Additional Information
 Earth MOID = 2.25522 au 
 Jupiter MOID = 2.05769 au 
 T_jup = -0.602 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 9.3   0.6 52 2 parameter fit from 1345 observations, autocmod 2.9c
comet total magnitude slope K1 6.25   n/a 52 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-02 02:02 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin