+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   58P/Jackson-Neujmin Classification: Jupiter-family Comet          SPK-ID: 1000048 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2020-Jul-15.0] K201/2 (default) [epoch=2011-Mar-02.0] K204/5 [epoch=1995-Aug-26.0] J952/1 [epoch=1987-May-05.0] SAO/1987 [epoch=1979-Jan-07.0] SAO/1978 [epoch=1970-Aug-02.0] SAO/1970 [epoch=1936-Sep-29.0] SAO/1936 Orbital Elements at Epoch 2459045.5 (2020-Jul-15.0) TDB Reference: JPL K201/2 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6626222796241679 1.4768e-05   a 4.082763353976304 0.00019529 au q 1.377433393198512 5.9374e-06 au i 13.10969157569631 3.7618e-05 deg node 159.0788667626832 0.00030968 deg peri 200.4439577030124 0.00067647 deg M 5.803408896461962 0.000532 deg tp 2458996.925268439575 (2020-May-27.42526844) 0.00099241 TDB period 3013.212350488325 8.25 0.2162 0.0005919 d yr n .119473823324021 8.5723e-06 deg/d Q 6.788093314754096 0.0003247 au   Orbit Determination Parameters    # obs. used (total)      138      data-arc span      229 days      first obs. used      2020-04-08      last obs. used      2020-11-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      4      norm. resid. RMS      .70444      source      ORB      producer      Davide Farnocchia      solution date      2021-Jan-19 12:54:34   Additional Information  Earth MOID = .380388 au   Jupiter MOID = .28247 au   T_jup = 2.567  [ 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 9.2   1. K201/2 2 parameter fit from 108 observations, autocmod 2.9a comet total magnitude slope K1 26.25   n/a K201/2 autocmod 2.9a comet nuclear magnitude M2 16.3   0.08 K201/2 from 3 observations, autocmod 2.9a comet nuclear magnitude slope K2 5.   n/a K201/2 autocmod 2.9a comet nuclear phase coefficient PC 0.03   n/a K201/2 autocmod 2.9a 58P/Jackson-Neujmin          Discovered 1936-Sep-20 by Jackson, Cyril at Union Observatory, South Africa discovered on plate/photo taken on 9/15 Reference: comet.dis Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1987.4       1987 VIII   1987t   1979.2       1978 XXVI   1978q   1970.9   58P/1970 R1   1970 IX   1970k   1937.9   58P/1936 S1   1936 IV   1936c  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-25 16:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin