+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   P/2012 O1 (McNaught) Classification: Jupiter-family Comet          SPK-ID: 1003199 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456162.5 (2012-Aug-23.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5792439383964281 3.5577e-05   a 3.562980241068563 0.00031121 au q 1.499145533803354 7.296e-06 au i 11.4285782017345 0.00018148 deg node 111.2789608167202 0.00077 deg peri 222.1098868944044 0.0015536 deg M 4.410177935680985 0.00040077 deg tp 2456132.406537544596 (2012-Jul-23.90653754) 0.0013814 TDB period 2456.510064207328 6.73 0.32185 0.0008812 d yr n .1465493690603566 1.9201e-05 deg/d Q 5.626814948333772 0.00049148 au   Orbit Determination Parameters    # obs. used (total)      98      data-arc span      123 days      first obs. used      2012-07-18      last obs. used      2012-11-18      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      5      norm. resid. RMS      .68523      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 23:32:19   Additional Information  Earth MOID = .510875 au   Jupiter MOID = .349294 au   T_jup = 2.783  [ 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 18.9   0.8 13 2 parameter fit from 54 observations, autocmod 2.9c comet total magnitude slope K1 4.5   n/a 13 autocmod 2.9c [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2012.6   P/2012 O1        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-17 09:42 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin