+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   339P/Gibbs Classification: Jupiter-family Comet          SPK-ID: 1003021 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2455329.5 (2010-May-13.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6397913441480939 3.3348e-07   a 3.675907680955106 4.7053e-07 au q 1.324093764792536 1.3541e-06 au i 5.748211981731838 5.0307e-05 deg node 172.7770425728822 0.00033822 deg peri 27.15413297226823 0.00049018 deg M 44.89388808704678 5.3208e-05 deg tp 2455008.481516148181 (2009-Jun-25.98151615) 0.00043853 TDB period 2574.217986256335 7.05 0.00049426 1.353e-06 d yr n .1398482964232354 2.6852e-08 deg/d Q 6.027721597117675 7.7157e-07 au   Orbit Determination Parameters    # obs. used (total)      141      data-arc span      2712 days (7.43 yr)      first obs. used      2009-04-24      last obs. used      2016-09-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-BIG16      condition code      1      norm. resid. RMS      .67492      source      ORB      producer      Otto Matic      solution date      2016-Nov-12 10:43:37   Additional Information  Earth MOID = .326511 au   Jupiter MOID = .11679 au   T_jup = 2.701  [ hide covariance matrix ] Orbit Covariance (6×6)   e q tp node peri i e 1.112061210393365E-13 -4.498986207199154E-13 1.037704551220388E-10 -2.541977128840378E-13 8.705933316203944E-11 -1.433852225781993E-12 q -4.498986207199154E-13 1.833647748800572E-12 -4.520489983452627E-10 3.389790381870876E-12 -3.775752677040623E-10 6.072849434131514E-12 tp 1.037704551220388E-10 -4.520489983452627E-10 1.923065306408926E-7 -7.56759809976734E-9 1.564044325457183E-7 -2.070390702827456E-9 node -2.541977128840378E-13 3.389790381870876E-12 -7.56759809976734E-9 1.143960291420768E-7 -1.186851593411914E-7 5.070838148590739E-9 peri 8.705933316203944E-11 -3.775752677040623E-10 1.564044325457183E-7 -1.186851593411914E-7 2.40274061057788E-7 -6.686573779338888E-9 i -1.433852225781993E-12 6.072849434131514E-12 -2.070390702827456E-9 5.070838148590739E-9 -6.686573779338888E-9 2.530755538165278E-9 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 12.1   0.8 19 from 50 observations, assumed slope, autocmod 2.6g comet total magnitude slope K1 40.   n/a 19 autocmod 2.6g comet nuclear magnitude M2 17.7   1. 19 from 39 observations, autocmod 2.6g comet nuclear magnitude slope K2 5.   n/a 19 autocmod 2.6g comet nuclear phase coefficient PC 0.03   n/a 19 autocmod 2.6g [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2016.5   339P/2016 M2         2009.5   339P/2009 K1        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-15 15:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin