+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   73P/Schwassmann-Wachmann 3-T Classification: Jupiter-family Comet [NEO]          SPK-ID: 1002341 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2453839.5 (2006-Apr-14.0) TDB Reference: JPL 5 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.711932414090286 0.0032265   a 3.26075831524011 0.036556 au q 0.939318776106244 1.6375e-05 au i 11.5122995825914 0.020867 deg node 70.4760044162668 0.097817 deg peri 198.1833800675977 0.10068 deg M 350.6764189561788 0.16032 deg tp 2453895.200179146768 (2006-Jun-08.70017915) 0.021072 TDB period 2150.68270427328 5.89 36.167 0.09902 d yr n .167388708378368 0.0028149 deg/d Q 5.582197854373978 0.062582 au   Orbit Determination Parameters    # obs. used (total)      23      data-arc span      34 days      first obs. used      2006-03-23      last obs. used      2006-04-26      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      8      norm. resid. RMS      .6218      source      ORB      producer      Nick Mastrodemos      solution date      2006-Apr-29 15:01:45   Additional Information  Earth MOID = .0416177 au   T_jup = 2.685  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Discovery Circumstances | Close-Approach Data ] no physical parameters available [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Discovery Circumstances | Close-Approach Data ] 2021-Apr-21 02:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin