+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   6P/d'Arrest Classification: Jupiter-family Comet          SPK-ID: 1000017 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2015-Jun-27.0] K155/3 (default) [epoch=2009-Jan-10.0] K085/10 [epoch=2002-Feb-15.0] SAO/2002 [epoch=1995-Jul-22.0] SAO/1995 [epoch=1989-Feb-03.0] SAO/1989 [epoch=1982-Sep-28.0] SAO/1982 [epoch=1976-Aug-10.0] SAO/1976 [epoch=1970-May-14.0] SAO/1970 [epoch=1963-Oct-18.0] SAO/1963 [epoch=1950-Jun-08.0] SAO/1950 [epoch=1943-Oct-03.0] SAO/1943 [epoch=1923-Sep-18.0] SAO/1923 [epoch=1910-Sep-06.0] SAO/1910 [epoch=1897-Jun-05.0] SAO/1897 [epoch=1890-Sep-30.0] SAO/1890 [epoch=1877-May-21.0] SAO/1877 [epoch=1870-Sep-15.0] SAO/1870 [epoch=1857-Nov-22.0] SAO/1857 [epoch=1851-Jul-17.0] SAO/1851 [epoch=1678-Jul-03.0] SAO/1678 Orbital Elements at Epoch 2457200.5 (2015-Jun-27.0) TDB Reference: JPL K155/3 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6114219228700193 7.7092e-08   a 3.503683369339459 4.8314e-07 au q 1.361454546530219 2.6375e-07 au i 19.48168162749337 8.0823e-06 deg node 138.9337127711251 1.9906e-05 deg peri 178.1152293178701 5.0107e-05 deg M 17.52046753268517 3.9203e-05 deg tp 2457083.918699738651 (2015-Mar-02.41869974) 0.0002606 TDB period 2395.442245807094 6.56 0.00049547 1.357e-06 d yr n .1502854016330941 3.1085e-08 deg/d Q 5.645912192148699 7.7854e-07 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 3.394187790901383E-9 2.332E-11 A2 [EST] -8.903327666485144E-11 6.164E-12 A3 [EST] -6.286843222727497E-10 1.396E-11 DT [EST] 108.8992717554588 1.21   Orbit Determination Parameters    # obs. used (total)      2194      data-arc span      10516 days (28.79 yr)      first obs. used      1987-03-31      last obs. used      2016-01-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-BIG16      condition code      1      norm. resid. RMS      .58448      source      ORB      producer      Davide Farnocchia      solution date      2016-Feb-23 14:43:35   Additional Information  Earth MOID = .348287 au   Jupiter MOID = .222085 au   T_jup = 2.709  [ 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 14.8   1. K155/3 2 parameter fit from 296 observations, autocmod 2.6f comet total magnitude slope K1 8.   n/a K155/3 autocmod 2.6f diameter diameter 3.2 km n/a DASTCOM value unverified 6P/d'Arrest          Discovered 1851-Jun-28 by d'Arrest, Heinrich Louis at Leipzig, Germany Reference: comet.dis Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1988.9       1989 II   1987k   1982.4       1982 VII   1982e   1975.8       1976 XI   1976e   1969.3       1970 VII   1970d   1962.7       1963 VII   1963f   1949.6       1950 II   1950a   1943.0       1943 III     1923.3       1923 II   1923b   1910.2       1910 III   1910c   1897.1       1897 II   1897a   1890.6       1890 V   1890d   1877.4       1877 IV   1877d   1870.9       1870 III   1870c   1857.8   6P/1857 X1   1857 VII     1851.2   6P/1851 M1   1851 II     1680.7   6P/1678 R1   1678     [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-05 11:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin