+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   186P/Garradd Classification: Jupiter-family Comet          SPK-ID: 1002441 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2455729.5 (2011-Jun-17.0) TDB Reference: JPL 62 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1270539178168337 1.8698e-07   a 4.949083715948849 1.8898e-07 au q 4.320283240234054 8.9541e-07 au i 28.554614850281 1.4708e-05 deg node 327.6005591761173 4.2911e-05 deg peri 287.2726791942438 0.0002231 deg M 99.7333175636232 0.00017723 deg tp 2454615.402006298445 (2008-May-28.90200630) 0.0019663 TDB period 4021.477351103863 11.01 0.00023034 6.306e-07 d yr n .08951934042378304 5.1274e-09 deg/d Q 5.577884191663645 2.1299e-07 au   Orbit Determination Parameters    # obs. used (total)      359      data-arc span      16570 days (45.37 yr)      first obs. used      1975-05-31      last obs. used      2020-10-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .73993      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 23:27:48   Additional Information  Earth MOID = 3.4313 au   Jupiter MOID = .276755 au   T_jup = 2.751  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 6.8   01. 62 from 205 observations, assumed slope, autocmod 2.9c comet total magnitude slope K1 13.25   n/a 62 autocmod 2.9c comet nuclear magnitude M2 12.6   0.8 62 from 126 observations, autocmod 2.9c comet nuclear magnitude slope K2 5.   n/a 62 autocmod 2.9c comet nuclear phase coefficient PC 0.03   n/a 62 autocmod 2.9c [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2008.4   186P/2007 B3         1975.4   186P/1977 O1        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-23 14:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin