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/2021 A9 (PANSTARRS)
Classification: Hyperbolic Comet          SPK-ID: 1003760
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459253.5 (2021-Feb-08.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.004402435497363 0.00084593  
a -1761.77652938752 338.34 au
q 7.756107531396744 0.0019584 au
i 158.02869468 0.0030804 deg
node 314.840976539401 0.0037232 deg
peri 211.5066636518455 0.031166 deg
M -.01368569072614443 0.0039369 deg
tp 2460280.307134245845
(2023-Dec-01.80713425)
0.45729 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.332839466118056E-5 3.8394e-06 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      78  
   data-arc span      145 days  
   first obs. used      2020-12-12  
   last obs. used      2021-05-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .35948  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 19:11:02  

Additional Information
 Earth MOID = 6.79389 au 
 Jupiter MOID = 2.71672 au 
[ 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 6.9   0.4 7 from 71 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 9.25   n/a 7 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-04 00:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin