+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   73P/Schwassmann-Wachmann 3-Z Classification: Jupiter-family Comet [NEO]          SPK-ID: 1002348 [ 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 0.02059   a 3.07211624836372 0.20924 au q 0.942039154090354 0.0010702 au i 11.349472014182 0.13307 deg node 70.49401080978578 0.73911 deg peri 198.0161462720894 0.81632 deg M 349.876181395664 1.0604 deg tp 2453894.809120050676 (2006-Jun-08.30912005) 0.14292 TDB period 1966.77597618308 5.38 200.93 0.5501 d yr n .1830406738537917 0.0187 deg/d Q 5.202193342637086 0.35432 au   Orbit Determination Parameters    # obs. used (total)      16      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      1.1723      source      ORB      producer      Nick Mastrodemos      solution date      2006-Apr-18 21:25:52   Additional Information  Earth MOID = .0402231 au   T_jup = 2.779  [ 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 00:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin