+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   P/2012 C3 (PANSTARRS) Classification: Jupiter-family Comet          SPK-ID: 1003174 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2455974.5 (2012-Feb-17.0) TDB Reference: JPL 5 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6264896167183933 0.00096472   a 9.705079983736944 0.026225 AU q 3.624948144504235 0.00080752 AU i 9.189447852018802 0.019829 deg node 135.4409015495077 0.014522 deg peri 344.8623931102215 0.33107 deg M 4.385475912970199 0.042361 deg tp 2455839.972418533095 (2011-Oct-05.47241853) 1.8432 JED period 11043.2551196673 30.23 44.761 0.1225 d yr n .03259908388414064 0.00013213 deg/d Q 15.78521182296965 0.042655 AU   Orbit Determination Parameters    # obs. used (total)      20      data-arc span      58 days      first obs. used      2012-01-26      last obs. used      2012-03-24      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      6      fit RMS      .36622      data source      ORB      producer      Otto Matic      solution date      2013-Mar-29 15:16:13   Additional Information  Earth MOID = 2.64209 AU   T_jup = 2.638  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 13.5 mag 0.6 5 from 17 observations, assumed slope, autocmod 2.5b comet total magnitude slope K1 10.   n/a 5 autocmod 2.5b comet nuclear magnitude M2 15.9 mag 0.4 5 from 3 observations, autocmod 2.5b comet nuclear magnitude slope K2 5.   n/a 5 autocmod 2.5b comet nuclear phase coefficient PC 0.03   n/a 5 autocmod 2.5b Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2011.8   P/2012 C3        [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2013-May-20 19:52 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin