+ 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 2455339.5 (2010-May-23.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6397897657997217 3.3499e-07   a 3.67628852236635 4.6458e-07 au q 1.324236749629378 1.3571e-06 au i 5.748418408832962 5.054e-05 deg node 172.7758445445358 0.00034827 deg peri 27.16268162359282 0.0004977 deg M 46.28458513042509 5.324e-05 deg tp 2455008.485754897355 (2009-Jun-25.98575490) 0.00043976 TDB period 2574.618048344982 7.05 0.00048804 1.336e-06 d yr n .1398265658206721 2.6505e-08 deg/d Q 6.028340295103322 7.6182e-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.      DE441      SB-pert. ephem.      SB441-N16      condition code      1      norm. resid. RMS      .66971      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 23:28:30   Additional Information  Earth MOID = .326654 au   Jupiter MOID = .11679 au   T_jup = 2.701  [ show covariance matrix ] [ 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 12.3   0.8 20 from 50 observations, assumed slope, autocmod 2.9c comet total magnitude slope K1 38.25   n/a 20 autocmod 2.9c comet nuclear magnitude M2 17.7   1. 20 from 39 observations, autocmod 2.9c comet nuclear magnitude slope K2 5.   n/a 20 autocmod 2.9c comet nuclear phase coefficient PC 0.03   n/a 20 autocmod 2.9c [ 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-16 15:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin