+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   374P/Larson Classification: Jupiter-family Comet          SPK-ID: 1002485 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2455703.5 (2011-May-22.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4625051328085132 2.2732e-06   a 4.968591314307033 2.638e-07 au q 2.670592328612233 1.1287e-05 au i 10.79084233675938 6.2462e-05 deg node 8.161295058542768 0.0002654 deg peri 51.42024881914991 0.0023176 deg M 112.063972659251 0.00072027 deg tp 2454444.250306117885 (2007-Dec-09.75030612) 0.0080245 TDB period 4045.277702013881 11.08 0.00032217 8.821e-07 d yr n .08899265427952681 7.0875e-09 deg/d Q 7.266590300001832 3.8581e-07 au   Orbit Determination Parameters    # obs. used (total)      286      data-arc span      4168 days (11.41 yr)      first obs. used      2007-09-10      last obs. used      2019-02-07      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      1      norm. resid. RMS      .76685      source      ORB      producer      Otto Matic      solution date      2019-May-15 08:31:29   Additional Information  Earth MOID = 1.69957 au   Jupiter MOID = .108228 au   T_jup = 2.749  [ 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 6.8   0.6 21 from 135 observations, assumed slope, autocmod 2.6q comet total magnitude slope K1 25.   n/a 21 autocmod 2.6q comet nuclear magnitude M2 15.6   0.6 21 from 116 observations, autocmod 2.6q comet nuclear magnitude slope K2 5.   n/a 21 autocmod 2.6q comet nuclear phase coefficient PC 0.03   n/a 21 autocmod 2.6q [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2019.0   374P/2018 S1         2007.9   374P/2007 V1        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-11 08:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin