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 2455695.5 (2011-May-14.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4187370261670714 1.6291e-05  
a 4.056313312972152 1.1165e-05 AU
q 2.357784739096292 6.6846e-05 AU
i 15.24190667234761 0.00014383 deg
node 135.1098034371948 0.00040626 deg
peri 352.8574471617226 0.001505 deg
M 311.3814953167306 0.00060765 deg
tp 2456098.490457887661
(2012-Jun-19.99045789)
0.0064406 JED
period 2983.97833879662
8.17
0.012321
3.373e-05
d
yr
n .1206443074064609 4.9813e-07 deg/d
Q 5.754841886848013 1.5841e-05 AU
  Orbit Determination Parameters
   # obs. used (total)      60  
   data-arc span      2903 days (7.95 yr)  
   first obs. used      2004-02-14  
   last obs. used      2012-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      2  
   fit RMS      .5145  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:44:49  

Additional Information
 Earth MOID = 1.37406 AU 
 T_jup = 2.830 
[ 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 8 2 parameter fit from 25 observations, autocmod 2.5c
comet total magnitude slope K1 22.   n/a 8 autocmod 2.5c
comet nuclear magnitude M2 16.6 mag 0.3 8 from 16 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 8 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 8 autocmod 2.5c

[ 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-Sep-20 15:59 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin