+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   C/2012 A1 (PANSTARRS) Classification: Hyperbolic Comet          SPK-ID: 1003166 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2456112.5 (2012-Jul-04.0) TDB Reference: JPL 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 1.001018175815785 3.3836e-05   a -7469.771761040649 248.24 AU q 7.605540956525357 6.201e-05 AU i 120.9014664674593 0.0001009 deg node 277.9713713708508 4.426e-05 deg peri 191.7244387149238 0.001373 deg M 359.9992165515358 3.9062e-05 deg tp 2456625.677205989889 (2013-Nov-29.17720599) 0.017486 JED period n/a n/a n/a n/a d yr n 1.526662632519508E-6 7.6101e-08 deg/d Q n/a n/a AU   Orbit Determination Parameters    # obs. used (total)      246      data-arc span      436 days (1.19 yr)      first obs. used      2012-01-02      last obs. used      2013-03-13      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      fit RMS      .68792      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 12:30:54   Additional Information  Earth MOID = 6.63797 AU  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 5.6 mag 0.6 30 from 95 observations, assumed slope, autocmod 2.5c comet total magnitude slope K1 10.   n/a 30 autocmod 2.5c comet nuclear magnitude M2 10.1 mag 0.6 30 from 101 observations, autocmod 2.5c comet nuclear magnitude slope K2 5.   n/a 30 autocmod 2.5c comet nuclear phase coefficient PC 0.03   n/a 30 autocmod 2.5c [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2013-May-20 14:32 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin