+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   363P/Lemmon (2017 W1) Classification: Jupiter-family Comet          SPK-ID: 1003169 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456838.5 (2014-Jun-30.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5576536808982621 3.501e-07   a 3.404914744609994 3.2016e-07 au q 1.506151504133465 1.328e-06 au i 3.97332511081194 2.338e-05 deg node 169.9482827930966 0.00028371 deg peri 315.2169759658266 0.00032884 deg M 146.5083253958247 5.326e-05 deg tp 2455904.562973447145 (2011-Dec-09.06297345) 0.00029682 TDB period 2294.868422327961 6.28 0.00032368 8.862e-07 d yr n .1568717389186125 2.2126e-08 deg/d Q 5.303677985086522 4.987e-07 au   Orbit Determination Parameters    # obs. used (total)      110      data-arc span      2384 days (6.53 yr)      first obs. used      2011-11-03      last obs. used      2018-05-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      1      norm. resid. RMS      .70411      source      ORB      producer      Otto Matic      solution date      2019-May-15 08:31:18   Additional Information  Earth MOID = .523385 au   Jupiter MOID = .239042 au   T_jup = 2.868  [ 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 18.0   01. 15 2 parameter fit from 72 observations, autocmod 2.6q comet total magnitude slope K1 9.   n/a 15 autocmod 2.6q comet nuclear magnitude M2 19.7   0.5 15 from 19 observations, autocmod 2.6q comet nuclear magnitude slope K2 5.   n/a 15 autocmod 2.6q comet nuclear phase coefficient PC 0.03   n/a 15 autocmod 2.6q [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2018.2   363P/2017 W1         2011.9   363P/2011 VJ5        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-23 05:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin