+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   260P/McNaught Classification: Jupiter-family Comet          SPK-ID: 1000584 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456904.5 (2014-Sep-04.0) TDB Reference: JPL 91 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5941740417991925 5.7358e-08   a 3.676514034429992 4.0443e-08 au q 1.492024830861268 2.0482e-07 au i 15.76554304387111 4.3458e-06 deg node 351.8653969546087 1.4282e-05 deg peri 15.59102536329714 3.0378e-05 deg M 100.8757471382425 3.2662e-06 deg tp 2456182.998841640896 (2012-Sep-12.49884164) 3.4664e-05 TDB period 2574.85495154076 7.05 4.2486e-05 1.163e-07 d yr n .1398137008784051 2.307e-09 deg/d Q 5.861003237998716 6.4473e-08 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 2.085032283085584E-10 4.706E-11 A2 [EST] -1.595934908449729E-11 4.314E-13 A3 [EST] 9.971225402995277E-11 2.944E-11   Orbit Determination Parameters    # obs. used (total)      6580      data-arc span      5394 days (14.77 yr)      first obs. used      2005-05-20      last obs. used      2020-02-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43611      source      ORB      producer      Otto Matic      solution date      2020-Sep-24 20:19:46   Additional Information  Earth MOID = .495106 au   Jupiter MOID = .0237559 au   T_jup = 2.717  [ 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 12.7   0.7 91 2 parameter fit from 2842 observations, autocmod 2.8 comet total magnitude slope K1 13.   n/a 91 autocmod 2.8 comet nuclear magnitude M2 15.4   0.7 91 from 3345 observations, autocmod 2.8 comet nuclear magnitude slope K2 5.   n/a 91 autocmod 2.8 comet nuclear phase coefficient PC 0.03   n/a 91 autocmod 2.8 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2012.7   260P/2012 K2         2005.6   260P/2005 K3        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-07 09:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin