+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   C/2020 H2 (Pruyne) Classification: Comet          SPK-ID: 1003677 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2458974.5 (2020-May-05.0) TDB Reference: JPL 10 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .9954595237029604 0.00014133   a 183.5958154426251 5.7155 au q .8336124482528915 4.0159e-06 au i 125.0445023796069 0.00032372 deg node 277.6341313288875 0.0014337 deg peri 26.6902003344211 0.0027483 deg M .002936390295851997 0.00013761 deg tp 2458967.088538210349 (2020-Apr-27.58853821) 0.001254 TDB period 908641.5549197968 2487.72 42430 116.2 d yr n .0003961958354763735 1.8501e-05 deg/d Q 366.3580184369972 11.405 au   Orbit Determination Parameters    # obs. used (total)      120      data-arc span      43 days      first obs. used      2020-04-26      last obs. used      2020-06-08      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      norm. resid. RMS      .72172      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 23:34:05   Additional Information  Earth MOID = .130618 au   Jupiter MOID = 1.43783 au   T_jup = -0.621  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 19.8   1. 10 2 parameter fit from 95 observations, autocmod 2.9c comet total magnitude slope K1 35.25   n/a 10 autocmod 2.9c Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2020.3   C/2020 H2        [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2021-Apr-22 18:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin