+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   C/2013 R1 (Lovejoy) Classification: Comet          SPK-ID: 1003274 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456655.5 (2013-Dec-29.0) TDB Reference: JPL 69 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .9984251874684147 5.3151e-07   a 515.5061693901537 0.17395 au q .8118255756651548 8.6082e-08 au i 64.04095251532155 1.5469e-05 deg node 70.71117526802972 7.2273e-06 deg peri 67.166448676692 6.4864e-06 deg M .0005277211871185447 2.6675e-07 deg tp 2456649.233121749913 (2013-Dec-22.73312175) 7.6389e-06 TDB period 4275129.036129691 11704.67 2163.9 5.924 d yr n 8.420798459124662E-5 4.2622e-08 deg/d Q 1030.200513204642 0.34762 au   Orbit Determination Parameters    # obs. used (total)      3894      data-arc span      372 days (1.02 yr)      first obs. used      2013-09-07      last obs. used      2014-09-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      norm. resid. RMS      .79579      source      ORB      producer      Otto Matic      solution date      2021-Jan-30 21:12:39   Additional Information  Earth MOID = .146111 au   Jupiter MOID = 1.56422 au   T_jup = 0.499  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 11.5   01. 69 2 parameter fit from 556 observations, autocmod 2.8 comet total magnitude slope K1 7.25   n/a 69 autocmod 2.8 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2014.0   C/2013 R1        [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ] 2021-Mar-01 23:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin