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[00552]   [PSO] Name-designation: pi6-Orionids   Shower status - Established        Activity  AdNo Sl_b Sl_e Sl_a RA DE dRA dDE V LoR SLoR LaR Theta Phi a q e Peri Node Incl N T A O R References     [deg]     [deg/day] [km/s] [deg]    [AU] [AU]   [deg]    2009/11 000 156.3 175.5 166.3 76.3 -1.3 0.64 0.09 66.5 74.98 268.68 -24.03 155.94 357.03 1.003 0.944 5.1 346.3 139.0 000000046 T   Segon et al., 2014 annual 001 140 179 159 70.5 -2.3 0.90 0.13 65.8 68.53 269.53 -24.30 155.70 358.97 7.53 1.004 0.893 17.2 342.4 138.3 000000099 T M 1   Jenniskens et al., 2016 annual 003 138.0 183.0 162.0 69.3 -1.2 0.9 0.16 66.1 66.9 264.9 -22.5 156.54 349.36 9.74 0.987 0.9 17.6 342.0 140.9 000005421 T M   Jenniskens, 2023 Parent body: 1P/Halley Notes: