+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   73P/Schwassmann-Wachmann 3-AD Classification: Jupiter-family Comet [NEO]          SPK-ID: 1002352 [ 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 2 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.69335823324 0.094606   a 3.06777308736794 0.95286 au q 0.940707359529286 0.0022547 au i 11.3683658421522 0.64318 deg node 70.21921728190907 3.0294 deg peri 198.3713234061079 3.2068 deg M 349.7867838211022 4.868 deg tp 2453895.179240222853 (2006-Jun-08.67924022) 0.59808 TDB period 1962.606697941274 5.37 914.39 2.503 d yr n .1834295176805577 0.085461 deg/d Q 5.194838815206602 1.6135 au   Orbit Determination Parameters    # obs. used (total)      11      data-arc span      6 days      first obs. used      2006-04-02      last obs. used      2006-04-08      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      9      norm. resid. RMS      .75665      source      ORB      producer      Nick Mastrodemos      solution date      2006-Apr-18 20:39:59   Additional Information  Earth MOID = .0403756 au   T_jup = 2.781  [ 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-11 17:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin