+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   54P/de Vico-Swift-NEAT Classification: Jupiter-family Comet          SPK-ID: 1000019 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2009-Jul-01.0] 22 (default) [epoch=1965-Aug-28.0] SAO/1965 [epoch=1894-Oct-19.0] SAO/1894 [epoch=1844-Jun-28.0] SAO/1844 Orbital Elements at Epoch 2455013.5 (2009-Jul-01.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.4270474945217546114406 1.3065e-06   a 3.7904782930723568412645 7.8409e-07 au q 2.1717640349767100005351 5.2792e-06 au i 6.0671607093682196065742 3.1433e-05 deg node 358.8600316230779 0.00019239 deg peri 1.933331420129209 0.0006538 deg M 339.8904731313036 0.00026206 deg tp 2455164.070121110307 (2009-Nov-28.57012111) 0.0019773 TDB period 2695.5006924648 7.38 0.00083638 2.29e-06 d yr n .133555892234185 4.1441e-08 deg/d Q 5.409192551168005 1.1189e-06 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 6.664761869785403E-9 5.409E-10 A2 [EST] 6.905615013053886E-10 1.22E-11   Orbit Determination Parameters    # obs. used (total)      141      data-arc span      16209 days (44.38 yr)      first obs. used      1965-08-04      last obs. used      2009-12-20      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      1      norm. resid. RMS      .83512      source      ORB      producer      Nick Mastrodemos      solution date      2009-Dec-31 11:29:56   Additional Information  Earth MOID = 1.16881 au   T_jup = 2.908  [ 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 13.1   0.9 22 from 63 observations, assumed slope, autocmod 2.4a comet total magnitude slope K1 14.   n/a 22 autocmod 2.4a comet nuclear magnitude M2 17.3   0.7 22 from 59 observations, autocmod 2.4a comet nuclear magnitude slope K2 5.   n/a 22 autocmod 2.4a comet nuclear phase coefficient PC 0.03   n/a 22 autocmod 2.4a 54P/de Vico-Swift-NEAT          Discovered 1844-Aug-23 by de Vico, Francesco Reference: comet.dis Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2002.5   54P/2002 T4         1965.6   54P/1965 M1   1965 VII   1965e   1891.8   54P/1894 W1   1894 IV   1894e   1847.5   54P/1844 Q1   1844 I    [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-11 08:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin