+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   205P/Giacobini-B Classification: Jupiter-family Comet          SPK-ID: 1002996 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2454735.5 (2008-Sep-26.0) TDB Reference: JPL 3 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5753279137768729 0.01057   a 3.60328142190863 0.10322 au q 1.530213038690974 0.0057514 au i 15.40528193605396 0.15096 deg node 179.5073325093614 0.18213 deg peri 154.0793970125158 0.15102 deg M 2.339584320598842 0.053132 deg tp 2454719.263893101803 (2008-Sep-09.76389310) 0.34371 TDB period 2498.306400794663 6.84 107.35 0.2939 d yr n .1440976174441578 0.006192 deg/d Q 5.676349805126287 0.16261 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 7.838648189527286E-6 3.708E-6 A2 [EST] -2.395403737244474E-7 2.412E-6   Orbit Determination Parameters    # obs. used (total)      66      data-arc span      19 days      first obs. used      2008-09-17      last obs. used      2008-10-06      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      9      norm. resid. RMS      1.0167      source      ORB      producer      Otto Matic      solution date      2011-Sep-14 21:12:45   Additional Information  Earth MOID = .536385 au   T_jup = 2.756  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 18.5   0.9 3 from 9 observations, assumed slope, autocmod 2.5a comet total magnitude slope K1 10.   n/a 3 autocmod 2.5a [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] 2021-Apr-19 16:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin