+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   C/2013 US10 (Catalina) Classification: Hyperbolic Comet          SPK-ID: 1003283 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2457349.5 (2015-Nov-23.0) TDB Reference: JPL 83 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 1.000280834371231 1.4549e-06   a -2930.444713296654 15.181 au q .8229695984860307 2.8268e-07 au i 148.8782906405183 8.6305e-06 deg node 186.1445580421072 3.0725e-05 deg peri 340.358747245559 3.5088e-05 deg M 4.522064531657807E-5 3.513e-07 deg tp 2457342.221649261460 (2015-Nov-15.72164926) 2.0984e-05 TDB period n/a n/a n/a n/a d yr n 6.213034647688482E-6 4.828e-08 deg/d Q n/a n/a au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 7.447099167683204E-9 2.399E-10 A2 [EST] 8.513230736136108E-11 6.346E-11 A3 [EST] 1.877104598152047E-10 6.052E-11   Orbit Determination Parameters    # obs. used (total)      4397      data-arc span      1555 days (4.26 yr)      first obs. used      2013-08-14      last obs. used      2017-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      norm. resid. RMS      .45441      source      ORB      producer      Otto Matic      solution date      2019-May-15 08:29:46   Additional Information  Earth MOID = .138599 au   Jupiter MOID = 1.12818 au   T_jup = 2.210  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 8.1   1. 83 2 parameter fit from 535 observations, autocmod 2.6q comet total magnitude slope K1 7.   n/a 83 autocmod 2.6q [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2021-Mar-01 20:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin