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 2456487.5 (2013-Jul-14.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9993449333674883 2.3102e-05  
a 8036.560919069563 283.43 AU
q 5.264482898229964 5.431e-05 AU
i 56.34071497825839 9.1442e-05 deg
node 26.9840353388461 6.0243e-05 deg
peri 70.02863024646977 0.0011778 deg
M 359.9995135556885 2.5735e-05 deg
tp 2456843.077618526300
(2014-Jul-04.57761853)
0.0079478 JED
period 263150250.9649951
720466.12
1.3921e+07
3.811e+04
d
yr
n 1.36803973653777E-6 7.2372e-08 deg/d
Q 16067.8573552409 566.68 AU
  Orbit Determination Parameters
   # obs. used (total)      119  
   data-arc span      525 days (1.44 yr)  
   first obs. used      2012-10-17  
   last obs. used      2014-03-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   fit RMS      .47455  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:33:36  

Additional Information
 Earth MOID = 4.67566 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 35 2 parameter fit from 58 observations, autocmod 2.5c
comet total magnitude slope K1 11.   n/a 35 autocmod 2.5c
comet nuclear magnitude M2 11.4 mag 0.8 35 from 51 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 35 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 35 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-Apr-20 11:05 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin