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 2456547.5 (2013-Sep-12.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9994213214321717 1.9475e-05  
a 9096.975801087241 306.18 AU
q 5.264224928142222 1.8352e-05 AU
i 56.33972906364763 5.2416e-05 deg
node 26.9832592882503 4.7608e-05 deg
peri 70.03642231926915 0.0003022 deg
M 359.9996641838733 1.6956e-05 deg
tp 2456843.126276533403
(2014-Jul-04.62627653)
0.0026607 JED
period 316915868.8352464
867668.36
1.6e+07
4.381e+04
d
yr
n 1.135948166064072E-6 5.7349e-08 deg/d
Q 18188.68737724634 612.18 AU
  Orbit Determination Parameters
   # obs. used (total)      141  
   data-arc span      859 days (2.35 yr)  
   first obs. used      2012-10-17  
   last obs. used      2015-02-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   fit RMS      .49642  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-03 13:44:12  

Additional Information
 Earth MOID = 4.67585 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 41 2 parameter fit from 59 observations, autocmod 2.6
comet total magnitude slope K1 11.   n/a 41 autocmod 2.6
comet nuclear magnitude M2 11.5 mag 0.7 41 from 70 observations, autocmod 2.6
comet nuclear magnitude slope K2 5.   n/a 41 autocmod 2.6
comet nuclear phase coefficient PC 0.03   n/a 41 autocmod 2.6

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 2015-Apr-01 03:45 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin