+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   60P/Tsuchinshan 2 Classification: Jupiter-family Comet          SPK-ID: 1000098 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2015-Jul-01.0] K183/5 (default) [epoch=2006-Feb-28.0] K055/10 [epoch=1999-Mar-03.0] SAO/1999 [epoch=1992-May-18.0] SAO/1992 [epoch=1985-Aug-03.0] SAO/1985 [epoch=1978-Sep-09.0] SAO/1978 [epoch=1971-Nov-25.0] SAO/1971 [epoch=1965-Feb-09.0] SAO/1965 Orbital Elements at Epoch 2457204.5 (2015-Jul-01.0) TDB Reference: JPL K183/5 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5385486170391682 9.9521e-08   a 3.509603648442876 5.2808e-08 au q 1.619511457218346 3.4184e-07 au i 3.609030486894438 5.6413e-06 deg node 267.6621316408426 0.0001531 deg peri 216.4921496275937 0.00017075 deg M 171.3579078061031 1.0397e-05 deg tp 2456061.392204624895 (2012-May-13.89220463) 8.5764e-05 TDB period 2401.516286022145 6.57 5.4203e-05 1.484e-07 d yr n .1499052919588155 3.3834e-09 deg/d Q 5.399695839667406 8.1248e-08 au   Orbit Determination Parameters    # obs. used (total)      1390      data-arc span      5009 days (13.71 yr)      first obs. used      2005-10-05      last obs. used      2019-06-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .68005      source      ORB      producer      Davide Farnocchia      solution date      2019-Sep-03 14:44:43   Additional Information  Earth MOID = .638458 au   Jupiter MOID = .129641 au   T_jup = 2.864  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 9.3   01. K183/5 2 parameter fit from 696 observations, autocmod 2.8 comet total magnitude slope K1 25.   n/a K183/5 autocmod 2.8 comet nuclear magnitude M2 15.2   0.9 K183/5 from 590 observations, autocmod 2.8 comet nuclear magnitude slope K2 5.   n/a K183/5 autocmod 2.8 comet nuclear phase coefficient PC 0.03   n/a K183/5 autocmod 2.8 60P/Tsuchinshan 2          Discovered 1965-Jan-11 at Purple Mountain Observatory, Nanking discovered on plate/photo taken on discovery date Reference: comet.dis Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1992.6       1992 XII   1991e1   1986.1       1985 X   1985d   1979.5       1978 XVI   1978p   1972.9   60P/1971 S1   1971 X   1971d   1966.3   60P/1965 A2   1965 II   1965c  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-05 11:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin