+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11P/Tempel-Swift-LINEAR Classification: Jupiter-family Comet          SPK-ID: 1000365 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2019-Oct-22.0] K204/8 (default) [epoch=2002-Feb-15.0] K0116/15 [epoch=1908-Sep-16.0] SAO/1908 [epoch=1891-Nov-04.0] SAO/1891 [epoch=1880-Nov-21.0] SAO/1880 [epoch=1869-Dec-09.0] SAO/1869 Orbital Elements at Epoch 2458778.5 (2019-Oct-22.0) TDB Reference: JPL K204/8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5774510603585563 9.3727e-08   a 3.289034442888893 3.0957e-07 au q 1.389778016286888 2.4011e-07 au i 14.43768052565678 8.8482e-06 deg node 238.9931433217067 2.1923e-05 deg peri 167.7532603963978 4.0182e-05 deg M 293.7429008087709 2.1579e-06 deg tp 2459179.487630928800 (2020-Nov-25.98763093) 4.7973e-05 TDB period 2178.718188638679 5.97 0.0003076 8.422e-07 d yr n .1652347705532938 2.3328e-08 deg/d Q 5.188290869490897 4.8833e-07 au   Orbit Determination Parameters    # obs. used (total)      1152      data-arc span      6990 days (19.14 yr)      first obs. used      2001-12-07      last obs. used      2021-01-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60348      source      ORB      producer      Davide Farnocchia      solution date      2021-Feb-01 11:18:20   Additional Information  Earth MOID = .403286 au   Jupiter MOID = .325346 au   T_jup = 2.839  [ 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 15.3   0.7 K204/8 2 parameter fit from 927 observations, autocmod 2.9a comet total magnitude slope K1 19.75   n/a K204/8 autocmod 2.9a comet nuclear magnitude M2 18.6   0.6 K204/8 from 190 observations, autocmod 2.9a comet nuclear magnitude slope K2 5.   n/a K204/8 autocmod 2.9a comet nuclear phase coefficient PC 0.03   n/a K204/8 autocmod 2.9a [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2003.0   11P/2001 X3         1907.6       1908 II   1908d   1889.7       1891 V   1891d   1877.7   11P/1880 T1   1880 IV   1880e   1871.8   11P/1869 W1   1869 III   1869c  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-05 11:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin