+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   7P/Pons-Winnecke Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000069 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2005-Aug-17.0] 9 (default) [epoch=2002-May-06.0] SAO/2002 [epoch=1995-Dec-29.0] SAO/1996 [epoch=1989-Aug-22.0] SAO/1989 [epoch=1983-Apr-16.0] SAO/1983 [epoch=1976-Dec-08.0] SAO/1976 [epoch=1970-Aug-02.0] SAO/1970 [epoch=1964-Mar-26.0] SAO/1964 [epoch=1951-Aug-22.0] SAO/1951 [epoch=1945-Jul-04.0] SAO/1945 [epoch=1939-Jun-26.0] SAO/1939 [epoch=1933-May-08.0] SAO/1933 [epoch=1927-Jun-09.0] SAO/1927 [epoch=1921-May-31.0] SAO/1921 [epoch=1915-Sep-20.0] SAO/1915 [epoch=1909-Oct-21.0] SAO/1909 [epoch=1898-Mar-12.0] SAO/1898 [epoch=1892-Jul-01.0] SAO/1892 [epoch=1886-Sep-11.0] SAO/1886 [epoch=1875-Mar-13.0] SAO/1875 [epoch=1869-Jul-02.0] SAO/1869 [epoch=1858-May-01.0] SAO/1858 [epoch=1819-Jul-25.0] SAO/1819 Orbital Elements at Epoch 2453599.5 (2005-Aug-17.0) TDB Reference: JPL 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6345239307344905 5.4873e-08   a 3.435281812466348 3.042e-08 au q 1.255513293639496 1.9213e-07 au i 22.30263406756432 9.4577e-06 deg node 93.4232697884692 3.6819e-05 deg peri 172.2612479999519 3.7239e-05 deg M 184.0463822424439 6.518e-06 deg tp 2454736.178595472122 (2008-Sep-26.67859547) 4.7636e-05 TDB period 2325.637287741367 6.37 3.089e-05 8.457e-08 d yr n .1547962796681971 2.0561e-09 deg/d Q 5.6150503312932 4.9721e-08 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 6.465724991582124E-11 1.129E-12 A2 [EST] -1.82027310948468E-12 7.52E-13 A3 [EST] -1.273189130914683E-10 6.754E-12 DT [EST] 114.2128804769199 6.758   Orbit Determination Parameters    # obs. used (total)      706      data-arc span      36427 days (99.73 yr)      first obs. used      1921-04-28      last obs. used      2021-01-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .88023      source      ORB      producer      Javier Roa      solution date      2021-Feb-03 22:11:01   Additional Information  Earth MOID = .242018 au   Jupiter MOID = .276904 au   T_jup = 2.677  [ 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 15.4   0.8 9 2 parameter fit from 295 observations, autocmod 2.8 comet total magnitude slope K1 5.75   n/a 9 autocmod 2.8 diameter diameter 5.2 km n/a Lamy,P.L.;Toth,I.;Fernandez,Y.R.;Weaver,H.A. (2004) Comets II, pp. 223-264   7P/Pons-Winnecke          Discovered 1819-Jun-12 by Pons, Jean Louis at Marseilles, France Reference: comet.dis Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1989.6       1989 VIII   1989g   1983.3       1983 IV   1983b   1976.9       1976 XIV   1976f   1970.5       1970 VIII   1970b   1964.2       1964 I   1964b   1951.4       1951 VI   1951c   1945.1       1945 IV   1945a   1938.7       1939 V   1939c   1932.3       1933 II   1933b   1926.0       1927 VII   1927c   1919.6       1921 III   1921b   1913.2       1915 III   1915b   1906.9       1909 II   1909d   1900.5       1898 II   1898a   1894.1       1892 IV   1892c   1887.8       1886 VI   1886d   1875.0       1875 I   1875b   1868.7   7P/1869 G1   1869 I   1869a   1855.9   7P/1858 E1   1858 II     1817.7   7P/1819 L1   1819 III    [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-25 16:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin