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OCR: Plasma tail Dust tail Close approach Apr 11 1986 Earth's orbit Perihelion At vermal Argument equinox perihclion, Sun Longitude of Direction of ascending node 58 Yernal equinox Earth's position perihelion Close approach Feb 1986 Nov. 27 1985 Orbital inclination 162a Ascendinc node Comet's path below ecliptic plane Metcoroid tsnp Ieft by comet Aroument Lonai itude inciinatior rode left