+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   73P/Schwassmann-Wachmann 3-AX Classification: Jupiter-family Comet [NEO]          SPK-ID: 1002373 [ 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 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.692470126439069 0.075316   a 3.05014120644439 0.73328 au q 0.93800953956083 0.0043639 au i 11.4277852827943 0.64821 deg node 69.46695211432159 1.0882 deg peri 199.2512703220542 0.94647 deg M 349.5464523883325 3.8612 deg tp 2453895.998841915605 (2006-Jun-09.49884192) 0.49637 TDB period 1945.711049033359 5.33 701.64 1.921 d yr n .1850223342149648 0.066721 deg/d Q 5.162272873327948 1.241 au   Orbit Determination Parameters    # obs. used (total)      16      data-arc span      2 days      first obs. used      2006-04-19      last obs. used      2006-04-21      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      9      norm. resid. RMS      .38861      source      ORB      producer      Nick Mastrodemos      solution date      2006-Apr-30 20:14:16   Additional Information  Earth MOID = .0403094 au   T_jup = 2.789  [ 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-19 10:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin