+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70P/Kojima Classification: Jupiter-family Comet          SPK-ID: 1000053 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2010-Jul-18.0] 39 (default) [epoch=2000-Sep-13.0] SAO/2000 [epoch=1994-Feb-17.0] SAO/1994 [epoch=1986-Mar-31.0] SAO/1986 [epoch=1978-May-12.0] SAO/1978 [epoch=1970-Oct-21.0] SAO/1970 Orbital Elements at Epoch 2455395.5 (2010-Jul-18.0) TDB Reference: JPL 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .452541472117818 1.0879e-07   a 3.676432645252902 4.1431e-08 au q 2.01269440382815 4.0167e-07 au i 6.595847299713631 6.5027e-06 deg node 119.2600238928303 2.4082e-05 deg peri 2.041124565777666 4.4176e-05 deg M 142.1625768990721 2.1121e-05 deg tp 2454378.733722261608 (2007-Oct-05.23372226) 0.00014807 TDB period 2574.769450371507 7.05 4.3524e-05 1.192e-07 d yr n .1398183437154175 2.3635e-09 deg/d Q 5.340170886677654 6.018e-08 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 2.26183973729531E-10 6.278E-11 A2 [EST] -7.682112899835312E-11 1.847E-12   Orbit Determination Parameters    # obs. used (total)      1258      data-arc span      18273 days (50.03 yr)      first obs. used      1970-12-27      last obs. used      2021-01-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60848      source      ORB      producer      Javier Roa      solution date      2021-Feb-03 22:19:56   Additional Information  Earth MOID = 1.02827 au   Jupiter MOID = .140192 au   T_jup = 2.905  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 11.0   1. 39 2 parameter fit from 462 observations, autocmod 2.8 comet total magnitude slope K1 14.75   n/a 39 autocmod 2.8 comet nuclear magnitude M2 14.9   0.6 39 from 595 observations, autocmod 2.8 comet nuclear magnitude slope K2 5.   n/a 39 autocmod 2.8 comet nuclear phase coefficient PC 0.03   n/a 39 autocmod 2.8 diameter diameter 3 km n/a Scotti,J (1994) BAAS 26:1375   70P/Kojima          Discovered 1970-Dec-27 by Kojima, Nobuhisa at Ishiki, Japan discovered on plate/photo taken on discovery date Reference: comet.dis Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1993.7       1994 VI   1992z   1986.6       1986 VII   1985o   1979.6   70P/1977 X1   1978 X   1977r   1972.5   70P/1970 Y1   1970 XII   1970r  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-05 10:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin