+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   C/2014 S2 (PANSTARRS) Classification: Comet          SPK-ID: 1003343 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2457397.5 (2016-Jan-10.0) TDB Reference: JPL 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .9876258640050614 1.8634e-06   a 169.7607558409029 0.025655 au q 2.100642679378906 1.2563e-06 au i 64.6703699275772 1.1932e-05 deg node 8.122244194633751 1.0383e-05 deg peri 87.80660706220249 4.1623e-05 deg M .01390390599652786 3.1713e-06 deg tp 2457366.297549758568 (2015-Dec-09.79754976) 8.4325e-05 TDB period 807893.9896256953 2211.89 183.14 0.5014 d yr n .0004456030179984274 1.0101e-07 deg/d Q 337.4208690024268 0.050993 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 7.687398854948842E-8 2.045E-9 A2 [EST] 1.975634159693008E-8 1.317E-9 A3 [EST] -1.196079239403456E-8 9.269E-10   Orbit Determination Parameters    # obs. used (total)      2941      data-arc span      942 days (2.58 yr)      first obs. used      2014-09-02      last obs. used      2017-04-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      norm. resid. RMS      .59789      source      ORB      producer      Otto Matic      solution date      2017-May-06 22:16:56   Additional Information  Earth MOID = 1.76753 au   Jupiter MOID = .582633 au   T_jup = 0.797  [ 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 5.1   2. 37 from 241 observations, assumed slope, autocmod 2.6i comet total magnitude slope K1 15.   n/a 37 autocmod 2.6i comet nuclear magnitude M2 10.4   0.9 37 from 2443 observations, autocmod 2.6i comet nuclear magnitude slope K2 5.   n/a 37 autocmod 2.6i comet nuclear phase coefficient PC 0.03   n/a 37 autocmod 2.6i [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2015.9   C/2014 S2        [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ] 2021-Jan-26 06:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin