HALLEY.DAT HALLEY'S COMET FOR EPOCH 20 APRIL 1986 = JD 2446540.5 1 27.6854405 0.900407079 -0.434097561 55.2 2446470.95896 0.5871106 0.9672786 111.84786 58.14387 162.23950 1 2446539.0 2446540.0 0.041666 /