Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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/2012 U1 (PANSTARRS)
Classification: Comet          SPK-ID: 1003216
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456495.5 (2013-Jul-22.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9993454808214824 2.1618e-05  
a 8043.188285426324 265.67 AU
q 5.264420989239253 5.2709e-05 AU
i 56.3405194903399 8.6239e-05 deg
node 26.98391981666838 5.8715e-05 deg
peri 70.03016756167889 0.001134 deg
M 359.9995250738119 2.3532e-05 deg
tp 2456843.087697763185
(2014-Jul-04.58769776)
0.007722 JED
period 263475829.1510601
721357.51
1.3054e+07
3.574e+04
d
yr
n 1.366349244103143E-6 6.7697e-08 deg/d
Q 16081.11214986341 531.17 AU
  Orbit Determination Parameters
   # obs. used (total)      127  
   data-arc span      532 days (1.46 yr)  
   first obs. used      2012-10-17  
   last obs. used      2014-04-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   fit RMS      .48791  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:45:01  

Additional Information
 Earth MOID = 4.67672 AU 
 T_jup = 1.577 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.4 mag 0.6 38 2 parameter fit from 58 observations, autocmod 2.5c
comet total magnitude slope K1 11.   n/a 38 autocmod 2.5c
comet nuclear magnitude M2 11.4 mag 0.8 38 from 59 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 38 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 38 autocmod 2.5c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2014.5   C/2012 U1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Aug-23 05:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin