+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   C/2019 Q1 (Lemmon) Classification: Hyperbolic Comet          SPK-ID: 1003717 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2458860.5 (2020-Jan-12.0) TDB Reference: JPL 6 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 1.001050953595301 5.3976e-06   a -4754.900805890102 24.416 au q 4.997180097249544 6.8458e-06 au i 155.7224338186714 3.2845e-05 deg node 42.33970398524402 5.2035e-05 deg peri 55.9120400674155 0.00026189 deg M -.000569912324785361 4.3878e-06 deg tp 2459050.090323302305 (2020-Jul-19.59032330) 0.001994 TDB period n/a n/a n/a n/a d yr n 3.006020111462261E-6 2.3153e-08 deg/d Q n/a n/a au   Orbit Determination Parameters    # obs. used (total)      208      data-arc span      482 days (1.32 yr)      first obs. used      2019-08-28      last obs. used      2020-12-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      norm. resid. RMS      .55095      source      ORB      producer      Otto Matic      solution date      2021-Jan-14 17:13:02   Additional Information  Earth MOID = 4.06477 au   Jupiter MOID = .99708 au   T_jup = -2.526  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.001   .70576 16 autocmod 2.8 comet total magnitude M1 13.8   0.8 6 2 parameter fit from 161 observations, autocmod 2.8 comet total magnitude slope K1 4.5   n/a 6 autocmod 2.8 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] 2021-Jan-23 05:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin