+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   C/2011 L4 (PANSTARRS) Classification: Hyperbolic Comet          SPK-ID: 1003133 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2456365.5 (2013-Mar-14.0) TDB Reference: JPL 136 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 1.000032713934215 1.3011e-07   a -9217.613572306012 36.665 au q .301544404022693 1.5084e-07 au i 84.20818671265653 7.1982e-06 deg node 65.66588341697526 6.8436e-06 deg peri 333.6516382152546 5.6714e-06 deg M 4.26560639807278E-6 2.5439e-08 deg tp 2456361.669949932096 (2013-Mar-10.16994993) 1.8605e-05 TDB period n/a n/a n/a n/a d yr n 1.113720792795573E-6 6.6451e-09 deg/d Q n/a n/a au   Orbit Determination Parameters    # obs. used (total)      5413      data-arc span      1194 days (3.27 yr)      first obs. used      2011-05-21      last obs. used      2014-08-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      norm. resid. RMS      .52061      source      ORB      producer      Otto Matic      solution date      2019-Nov-07 01:47:11   Additional Information  Earth MOID = .660345 au   Jupiter MOID = .166509 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 7.5   2. 136 2 parameter fit from 708 observations, autocmod 2.8 comet total magnitude slope K1 7.   n/a 136 autocmod 2.8 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2021-Apr-15 12:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin