+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   256P/LINEAR Classification: Jupiter-family Comet          SPK-ID: 1000445 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2455448.5 (2010-Sep-09.0) TDB Reference: JPL 44 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4179395800629077 1.1164e-06   a 4.621014694821357 1.4171e-07 au q 2.689709753803193 5.1137e-06 au i 27.64210650778099 4.0948e-05 deg node 81.44882392733858 8.5402e-05 deg peri 124.2035358831343 0.00039427 deg M 268.6160975455251 0.00014786 deg tp 2456369.525491956310 (2013-Mar-18.02549196) 0.001513 TDB period 3628.310547029339 9.93 0.0001669 4.569e-07 d yr n .09921973197546394 4.564e-09 deg/d Q 6.55231963583952 2.0093e-07 au   Orbit Determination Parameters    # obs. used (total)      176      data-arc span      3804 days (10.41 yr)      first obs. used      2003-01-27      last obs. used      2013-06-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .89328      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 11:13:04   Additional Information  Earth MOID = 1.78074 au   Jupiter MOID = .0480634 au   T_jup = 2.643  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 13.0   0.4 44 2 parameter fit from 64 observations, autocmod 2.8 comet total magnitude slope K1 9.5   n/a 44 autocmod 2.8 comet nuclear magnitude M2 15.6   0.6 44 from 108 observations, autocmod 2.8 comet nuclear magnitude slope K2 5.   n/a 44 autocmod 2.8 comet nuclear phase coefficient PC 0.03   n/a 44 autocmod 2.8 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2013.2   256P/2012 B2         2003.3   256P/2003 HT15        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-07 09:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin