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C/2011 U3 (PANSTARRS)
Classification: Hyperbolic Comet          SPK-ID: 1003156
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]
Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2455872.5 (2011-Nov-07.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000513026840093 7.7258e-05  
a -2088.876303231221 314.06 AU
q 1.071649609191908 0.00026945 AU
i 116.7805493891098 0.0056158 deg
node 228.3788883780853 5.0812e-05 deg
peri 287.8144583261267 0.011881 deg
M -.002166959131549175 0.00048876 deg
tp 2456082.401591534969
(2012-Jun-03.90159154)
0.0072629 JED
period n/a
n/a
n/a
n/a
d
yr
n 1.032369081007262E-5 2.3282e-06 deg/d
Q n/a n/a AU
  Orbit Determination Parameters
   # obs. used (total)      60  
   data-arc span      94 days  
   first obs. used      2011-10-24  
   last obs. used      2012-01-26  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   fit RMS      .6102  
   data source      ORB  
   producer      Otto Matic  
   solution date      2012-Jan-27 19:50:31  

Additional Information
 Earth MOID = .469295 AU 
 T_jup = -0.572 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.1 mag 0.6 6 2 parameter fit from 48 observations, autocmod 2.5b
comet total magnitude slope K1 14.   n/a 6 autocmod 2.5b

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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