+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   372P/McNaught Classification: Jupiter-family Comet          SPK-ID: 1002510 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2454936.5 (2009-Apr-15.0) TDB Reference: JPL 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1535045617883468 2.7632e-07   a 4.493537256093909 3.923e-07 au q 3.803758788717603 1.188e-06 au i 9.518531662903435 2.732e-05 deg node 325.8600836016958 7.1501e-05 deg peri 27.4551407165061 0.00096561 deg M 359.3231978070302 0.00072574 deg tp 2454943.040940574661 (2009-Apr-21.54094057) 0.0070137 TDB period 3479.212436569154 9.53 0.00045562 1.247e-06 d yr n .1034716926785291 1.355e-08 deg/d Q 5.183315723470215 4.5252e-07 au   Orbit Determination Parameters    # obs. used (total)      438      data-arc span      4131 days (11.31 yr)      first obs. used      2008-07-28      last obs. used      2019-11-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      1      norm. resid. RMS      .69541      source      ORB      producer      Otto Matic      solution date      2020-Jun-16 22:44:30   Additional Information  Earth MOID = 2.80187 au   Jupiter MOID = .305461 au   T_jup = 2.969  [ 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 7.1   0.8 34 from 153 observations, assumed slope, autocmod 2.8 comet total magnitude slope K1 15.5   n/a 34 autocmod 2.8 comet nuclear magnitude M2 13.1   0.8 34 from 189 observations, autocmod 2.8 comet nuclear magnitude slope K2 5.   n/a 34 autocmod 2.8 comet nuclear phase coefficient PC 0.03   n/a 34 autocmod 2.8 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2018.8   372P/2018 P6         2009.3   372P/2008 O2        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-05 11:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin