+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   C/2006 M4 (SWAN) Classification: Hyperbolic Comet          SPK-ID: 1002407 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2454049.5 (2006-Nov-10.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 1.000185049039808 1.7109e-06   a -4231.355298769043 39.12 au q .7830082351241019 3.5988e-07 au i 111.8232624168263 2.9769e-05 deg node 148.7268421584153 2.8409e-05 deg peri 62.59437100123628 5.6879e-05 deg M .0001513674291051965 2.099e-06 deg tp 2454007.228505602883 (2006-Sep-28.72850560) 3.8294e-05 TDB period n/a n/a n/a n/a d yr n 3.5808393165187E-6 4.9658e-08 deg/d Q n/a n/a au   Orbit Determination Parameters    # obs. used (total)      1265      data-arc span      433 days (1.19 yr)      first obs. used      2006-07-12      last obs. used      2007-09-18      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      norm. resid. RMS      .64886      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 23:30:58   Additional Information  Earth MOID = .070475 au   Jupiter MOID = 1.08892 au  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 11.0   1. 35 2 parameter fit from 227 observations, autocmod 2.9c comet total magnitude slope K1 7.25   n/a 35 autocmod 2.9c [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2021-Jun-25 01:57 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin