+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   68P/Klemola Classification: Jupiter-family Comet          SPK-ID: 1000051 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2016-Feb-28.0] K192/2 (default) [epoch=2006-Mar-06.0] K095/1 [epoch=1998-Apr-17.0] SAO/1998 [epoch=1987-Jul-24.0] SAO/1987 [epoch=1976-Aug-10.0] SAO/1976 [epoch=1965-Aug-28.0] SAO/1965 Orbital Elements at Epoch 2457446.5 (2016-Feb-28.0) TDB Reference: JPL K192/2 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6403325999028817 8.1503e-08   a 4.899118090102735 5.786e-08 au q 1.76205306623601 4.0038e-07 au i 11.18350804840104 5.356e-06 deg node 175.3003845692082 6.5691e-05 deg peri 153.8398902534949 7.1839e-05 deg M 237.0297098905035 8.829e-06 deg tp 2458799.422706332434 (2019-Nov-11.92270633) 8.0347e-05 TDB period 3960.73046461865 10.84 7.0166e-05 1.921e-07 d yr n .09089232484156475 1.6102e-09 deg/d Q 8.036183113969459 9.491e-08 au   Orbit Determination Parameters    # obs. used (total)      1669      data-arc span      4656 days (12.75 yr)      first obs. used      2008-04-13      last obs. used      2021-01-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5734      source      ORB      producer      Davide Farnocchia      solution date      2021-Feb-01 11:43:52   Additional Information  Earth MOID = .759789 au   Jupiter MOID = .174116 au   T_jup = 2.524  [ 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 11.2   0.6 K192/2 2 parameter fit from 929 observations, autocmod 2.9a comet total magnitude slope K1 11.75   n/a K192/2 autocmod 2.9a comet nuclear magnitude M2 14.1   0.8 K192/2 from 643 observations, autocmod 2.9a comet nuclear magnitude slope K2 5.   n/a K192/2 autocmod 2.9a comet nuclear phase coefficient PC 0.03   n/a K192/2 autocmod 2.9a diameter diameter 4.4 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (to be published)   68P/Klemola          Discovered 1965-Nov-(mid) by Klemola, A. R. at Yale-Columbia Southern Station, Argentina discovered on plate/photo taken on 10/28-31,11/1-2 Reference: comet.dis Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1987.3       1987 XIV   1987i   1976.5   68P/1976 P1   1976 X   1976j   1965.6   68P/1965 U1   1965 VI   1965j  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-21 02:20 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin