+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   73P/Schwassmann-Wachmann 3-BM Classification: Jupiter-family Comet [NEO]          SPK-ID: 1002388 [ 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 0.682439213725336 0.118   a 2.95929756911756 1.0785 au q 0.939756862869674 0.0067099 au i 11.2943325652082 1.0377 deg node 69.77558820073149 1.3708 deg peri 198.8613490413005 1.1093 deg M 349.1548474479109 6.1015 deg tp 2453895.516316536441 (2006-Jun-09.01631654) 0.89167 TDB period 1859.436633672268 5.09 1016.5 2.783 d yr n .1936070277850895 0.10584 deg/d Q 4.978838275365447 1.8146 au   Orbit Determination Parameters    # obs. used (total)      13      data-arc span      6 days      first obs. used      2006-04-20      last obs. used      2006-04-26      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      9      norm. resid. RMS      .65806      source      ORB      producer      Nick Mastrodemos      solution date      2006-May-01 11:18:03   Additional Information  Earth MOID = .0400412 au   T_jup = 2.839  [ 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 10:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin