+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   323P/SOHO Classification: Jupiter-family Comet [NEO]          SPK-ID: 1002073 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2021-Feb-11.0] K212/1 (default) [epoch=2010-Jun-28.0] K164/1 [epoch=2006-Apr-20.0] K124/1 Orbital Elements at Epoch 2459256.5 (2021-Feb-11.0) TDB Reference: JPL K212/1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .9848146550454431 4.8478e-08   a 2.581880218735026 2.7242e-06 au q .03920674175283825 1.2109e-07 au i 5.369940921166516 5.8669e-05 deg node 324.2293658272395 0.00034977 deg peri 353.1740221449773 0.00034735 deg M 5.789373331778518 9.5486e-06 deg tp 2459232.131341738164 (2021-Jan-17.63134174) 5.1884e-06 TDB period 1515.313743217514 4.15 0.0023983 6.566e-06 d yr n .2375745627671801 3.7601e-07 deg/d Q 5.124553695717214 5.4071e-06 au   Orbit Determination Parameters    # obs. used (total)      66      data-arc span      1547 days (4.24 yr)      first obs. used      2016-11-23      last obs. used      2021-02-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      2      norm. resid. RMS      .32325      source      ORB      producer      Davide Farnocchia      solution date      2021-Feb-19 11:55:03   Additional Information  Earth MOID = .0221702 au   Jupiter MOID = .220598 au   T_jup = 2.259  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 24.3   0.7 K212/1 2 parameter fit from 26 observations, autocmod 2.9a comet total magnitude slope K1 4.5   n/a K212/1 autocmod 2.9a [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2012.7   323P/2012 Q2         2008.6   323P/2008 K10         2004.5   323P/2004 E2         2000.3   323P/1999 X3        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-05 11:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin