+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL 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 2456233.5 (2012-Nov-02.0) TDB Reference: JPL 7 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .9969199501113281 0.0037046   a 1711.947044252662 2054.3 AU q 5.272882303062673 0.014648 AU i 56.3731008582627 0.059173 deg node 26.99275468898159 0.013798 deg peri 69.91218371598002 0.18538 deg M 359.9915178185122 0.015271 deg tp 2456843.091603464251 (2014-Jul-04.59160346) 0.21286 JED period 25872233.17072791 70834.31 4.657e+07 1.275e+05 d yr n 1.391453136744714E-5 2.5046e-05 deg/d Q 3418.62120620226 4102.3 AU   Orbit Determination Parameters    # obs. used (total)      43      data-arc span      82 days      first obs. used      2012-10-17      last obs. used      2013-01-07      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      fit RMS      .30759      data source      ORB      producer      Otto Matic      solution date      2013-Jan-26 09:51:21   Additional Information  Earth MOID = 4.68349 AU   T_jup = 1.579  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 5.7 mag 0.4 7 from 30 observations, assumed slope, autocmod 2.5b comet total magnitude slope K1 13.   n/a 7 autocmod 2.5b comet nuclear magnitude M2 12.2 mag 0.3 7 from 7 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 Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2014.5   C/2012 U1        [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2013-May-18 16:38 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin