+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   232P/Hill Classification: Jupiter-family Comet          SPK-ID: 1003050 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2455471.5 (2010-Oct-02.0) TDB Reference: JPL 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3349222812915101 3.0353e-07   a 4.484981085090934 1.3875e-07 au q 2.982860988523006 1.4069e-06 au i 14.63507406238314 1.617e-05 deg node 56.12915682706939 0.00011088 deg peri 53.41731985229155 0.00031142 deg M 37.93214340941561 0.00014865 deg tp 2455105.952150246806 (2009-Oct-01.45215025) 0.0014394 TDB period 3469.279984807936 9.50 0.00016099 4.408e-07 d yr n .1037679292465437 4.8152e-09 deg/d Q 5.987101181658861 1.8522e-07 au   Orbit Determination Parameters    # obs. used (total)      297      data-arc span      7058 days (19.32 yr)      first obs. used      1999-12-12      last obs. used      2019-04-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .8046      source      ORB      producer      Otto Matic      solution date      2019-May-15 08:31:07   Additional Information  Earth MOID = 2.02779 au   Jupiter MOID = .304592 au   T_jup = 2.853  [ 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 6.1   0.9 28 from 93 observations, assumed slope, autocmod 2.6q comet total magnitude slope K1 22.   n/a 28 autocmod 2.6q comet nuclear magnitude M2 14.6   0.8 28 from 168 observations, autocmod 2.6q comet nuclear magnitude slope K2 5.   n/a 28 autocmod 2.6q comet nuclear phase coefficient PC 0.03   n/a 28 autocmod 2.6q [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2009.7   232P/2009 W1         2000.3   232P/1999 XO188        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-07 09:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin