+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   327P/Van Ness Classification: Jupiter-family Comet          SPK-ID: 1000405 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2454921.5 (2009-Mar-31.0) TDB Reference: JPL 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5639985846989645 2.9659e-07   a 3.557860586426894 1.051e-07 au q 1.551232251125898 1.0949e-06 au i 36.2820940816616 3.1964e-05 deg node 173.9991681577681 4.6799e-05 deg peri 185.0220986033373 0.00013086 deg M 1.363286871824341 3.6021e-05 deg tp 2454912.217465580415 (2009-Mar-21.71746558) 0.00024539 TDB period 2451.217319050937 6.71 0.00010862 2.974e-07 d yr n .146865803044907 6.5077e-09 deg/d Q 5.56448892172789 1.6438e-07 au   Orbit Determination Parameters    # obs. used (total)      125      data-arc span      4946 days (13.54 yr)      first obs. used      2002-08-17      last obs. used      2016-03-02      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .89166      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 23:28:24   Additional Information  Earth MOID = .546845 au   Jupiter MOID = .103608 au   T_jup = 2.563  [ 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 11.9   0.5 23 2 parameter fit from 56 observations, autocmod 2.9c comet total magnitude slope K1 23.   n/a 23 autocmod 2.9c comet nuclear magnitude M2 17.9   0.8 23 from 28 observations, autocmod 2.9c comet nuclear magnitude slope K2 5.   n/a 23 autocmod 2.9c comet nuclear phase coefficient PC 0.03   n/a 23 autocmod 2.9c [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2015.9   327P/2015 P2         2002.5   327P/2002 Q1        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-20 08:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin