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 ]  
P/2011 U1 (PANSTARRS)
Classification: Jupiter-family Comet          SPK-ID: 1003154
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455621.5 (2011-Mar-01.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4191207671288596 1.3475e-05  
a 4.060960241075336 9.9447e-06 AU
q 2.358927469556043 5.5485e-05 AU
i 15.25043975881875 0.00011138 deg
node 135.2037169180686 0.000317 deg
peri 352.659186917578 0.0012529 deg
M 302.6024506472248 0.00051121 deg
tp 2456098.076235639350
(2012-Jun-19.57623564)
0.0057302 JED
period 2989.107492650653
8.18
0.01098
3.006e-05
d
yr
n .1204372880149461 4.424e-07 deg/d
Q 5.762993012594629 1.4113e-05 AU
  Orbit Determination Parameters
   # obs. used (total)      59  
   data-arc span      2903 days (7.95 yr)  
   first obs. used      2004-02-14  
   last obs. used      2012-01-26  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      2  
   fit RMS      .52164  
   data source      ORB  
   producer      Otto Matic  
   solution date      2012-Jan-27 19:50:38  

Additional Information
 Earth MOID = 1.37478 AU 
 T_jup = 2.829 
[ 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 8.9 mag 0.4 7 2 parameter fit from 25 observations, autocmod 2.5b
comet total magnitude slope K1 22.   n/a 7 autocmod 2.5b
comet nuclear magnitude M2 16.6 mag 0.3 7 from 16 observations, autocmod 2.5b
comet nuclear magnitude slope K2 5.   n/a 7 autocmod 2.5b
comet nuclear phase coefficient PC 0.03   n/a 7 autocmod 2.5b

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2012.5   P/2011 U1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-23 22:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin