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Table 2

OH, NH, CN, C2, and C3 production rates and A(θ = 0°)fρ parameter for comet 41P/Tuttle–Giacobini–Kresák.

UT date rh Production rates (1024 molecules s−1) A(θ = 0°)fρ (cm)
(au) (au) Q(OH) Q(CN) Q(NH) Q(C2) Q(C3) BC RC GC Rc
2017 Feb 16.88 1.27 0.29 2.20 ± 0.04 2.26 ± 0.03 0.61 ± 0.02 31.0 ± 1.4 39.5 ± 0.7 29.7 ± 1.6 36.0 ± 0.2
2017 Feb 19.08 1.26 0.27 2.55 ± 0.04 2.66 ± 0.03 0.73 ± 0.02 31.9 ± 1.8 43.7 ± 1.3 37.0 ± 0.7 42.8 ± 0.2
2017 Feb 25.04 1.22 0.24 2.51 ± 0.03 0.67 ± 0.01 29.8 ± 1.2 39.9 ± 1.2 41.3 ± 0.1
2017 Feb 25.10a 1.22 0.24 2.67 ± 0.02 3.04 ± 0.03 0.76 ± 0.03 25.1 ± 1.1 37.9 ± 0.5 46.2 ± 0.3
2017 Mar 01.92 1.19 0.22 2.63 ± 0.05 3.14 ± 0.05 0.74 ± 0.02 45.3 ± 2.3 55.3 ± 0.2
2017 Mar 03.12 1.18 0.21 2.69 ± 0.03 3.16 ± 0.02 0.87 ± 0.02 36.4 ± 2.1 49.3 ± 1.2 55.8 ± 0.6
2017 Mar 03.84 1.18 0.21 3.35 ± 0.05 3.94 ± 0.05
2017 Mar 04.16 1.17 0.20 3.02 ± 0.05 3.78 ± 0.05
2017 Mar 07.84 1.15 0.19 3.55 ± 0.08 4.36 ± 0.05 0.88 ± 0.05 50.6 ± 5.1 66.8 ± 3.6 74.0 ± 2.6
2017 Mar 08.12 1.15 0.19 3.35 ± 0.05 3.24 ± 0.04 79.1 ± 2.0
2017 Mar 08.12a 1.15 0.19 3.16 ± 0.03 4.29 ± 0.06 0.84 ± 0.07 50.9 ± 1.9 70.6 ± 1.7
2017 Mar 11.84 1.13 0.18 2190 ± 127 3.11 ± 0.06 3.83 ± 0.05 0.87 ± 0.04 56.1 ± 3.9 64.5 ± 8.3 69.0 ± 5.3
2017 Mar 14.84 1.12 0.17 2270 ± 155 4.34 ± 0.06 5.10 ± 0.06 1.38 ± 0.02 54.7 ± 1.4 87.3 ± 1.1
2017 Mar 26.04 1.07 0.15 2530 ± 140 5.07 ± 0.09 21.10 ± 0.64 6.07 ± 0.09 1.56 ± 0.02 54.8 ± 1.2 73.7 ± 2.9 63.4 ± 1.5 93.0 ± 1.8
2017 Mar 26.96 1.07 0.14 2570 ± 128 6.21 ± 0.10 1.67 ± 0.02 56.2 ± 2.4 71.7 ± 2.7 89.5 ± 1.2
2017 Mar 28.08 1.07 0.14 5.17 ± 0.07 6.03 ± 0.08 1.53 ± 0.01 53.5 ± 1.8 71.4 ± 2.6 89.5 ± 1.4
2017 Mar 29.92 1.06 0.14 4.54 ± 0.09 5.21 ± 0.07 48.1 ± 1.7
2017 Mar 29.96 1.06 0.14 2150 ± 146 4.93 ± 0.08 5.50 ± 0.07 81.1 ± 1.1
2017 Mar 30.00 1.06 0.14 4.88 ± 0.09 4.92 ± 0.08 49.5 ± 2.0
2017 Mar 30.96 1.06 0.14 2010 ± 131 4.21 ± 0.10 5.00 ± 0.09 46.9 ± 1.7 71.1 ± 1.4
2017 Mar 31.00 1.06 0.14 4.41 ± 0.09 4.52 ± 0.09
2017 Mar 31.04 1.06 0.14 2180 ± 144 4.08 ± 0.07 4.29 ± 0.08
2017 Mar 31.12 1.06 0.14 3.94 ± 0.07 4.66 ± 0.08
2017 Mar 31.16 1.06 0.14 2470 ± 199 3.91 ± 0.07 4.28 ± 0.07 41.4 ± 2.3 71.3 ± 1.2
2017 Mar 31.88 1.06 0.14 2010 ± 173 3.80 ± 0.06 4.69 ± 0.06 34.0 ± 3.1 67.3 ± 0.9
2017 Mar 31.96 1.06 0.14 3.67 ± 0.09 4.44 ± 0.09 50.6 ± 1.4 63.7 ± 1.1
2017 Apr 01.00 1.06 0.14 3.83 ± 0.09 4.52 ± 0.09 43.7 ± 2.0 65.7 ± 1.5
2017 Apr 01.04 1.06 0.14 3.58 ± 0.07 15.10 ± 0.63 4.55 ± 0.10 64.8 ± 1.7
2017 Apr 01.08 1.06 0.14 3.75 ± 0.08 4.49 ± 0.08 54.2 ± 1.1 68.5 ± 1.0
2017 Apr 01.16 1.06 0.14 3.91 ± 0.07 4.54 ± 0.08 1.33 ± 0.01 41.9 ± 1.1
2017 Apr 01.88 1.06 0.14 2250 ± 173 3.77 ± 0.06 4.43 ± 0.06 33.2 ± 2.3 59.7 ± 1.2
2017 Apr 01.92 1.06 0.14 4.05 ± 0.06 4.77 ± 0.06 33.5 ± 1.4 64.5 ± 1.6
2017 Apr 02.88 1.05 0.14 4.07 ± 0.07 21.70 ± 0.80 5.02 ± 0.07 1.23 ± 0.02 34.7 ± 2.5 49.6 ± 0.8 41.1 ± 1.1 60.5 ± 1.0
2017 Apr 03.88 1.05 0.14 2610 ± 149 4.24 ± 0.05 5.15 ± 0.06 1.38 ± 0.02 40.8 ± 2.0 53.7 ± 2.8 68.9 ± 0.6
2017 Apr 07.96 1.05 0.15 5.42 ± 0.08 1.36 ± 0.02 31.6 ± 3.8 52.9 ± 2.5 66.3 ± 2.8
2017 Apr 08.00 1.05 0.15 2350 ± 178 4.42 ± 0.09
2017 Apr 13.00 1.05 0.15 2590 ± 157 4.84 ± 0.10 5.41 ± 0.07 1.42 ± 0.03 34.3 ± 4.5 56.1 ± 1.9 66.1 ± 1.9
2017 Apr 20.00 1.05 0.17 1840 ± 131 4.81 ± 0.07 17.00 ± 0.78 5.24 ± 0.07 1.37 ± 0.01 36.7 ± 1.1 40.4 ± 1.3 60.6 ± 1.2
2017 Apr 26.08 1.06 0.18 6.05 ± 0.08 1.50 ± 0.02 45.8 ± 2.2 74.2 ± 1.3
2017 Apr 26.12 1.06 0.18 2260 ± 54 5.34 ± 0.08 20.20 ± 0.84
2017 Apr 26.21 1.06 0.18 5.12 ± 0.06 72.5 ± 1.4
2017 Apr 27.96 1.07 0.18 5.02 ± 0.08 19.10 ± 1.02 5.81 ± 0.07 1.38 ± 0.02 45.4 ± 1.9 72.9 ± 1.4
2017 Apr 28.00 1.07 0.18 2080 ± 134 5.13 ± 0.07
2017 Apr 28.21 1.07 0.19 5.15 ± 0.06
2017 May 03.00 1.08 0.20 4.04 ± 0.05 4.55 ± 0.06 1.18 ± 0.02 37.7 ± 1.7 56.2 ± 1.0
2017 May 15.16 1.13 0.23 2070 ± 115 4.08 ± 0.06 5.02 ± 0.06 1.08 ± 0.03 41.7 ± 7.1
2017 May 24.12 1.18 0.26 1570 ± 83 3.39 ± 0.03 3.94 ± 0.03 1.00 ± 0.03 42.3 ± 2.3
2017 May 26.12 1.20 0.27 4.23 ± 0.05 5.19 ± 0.04 1.13 ± 0.02 55.0 ± 3.1
2017 Jun 07.12 1.28 0.32 2.68 ± 0.07 33.2 ± 2.9 54.6 ± 1.2
2017 Jun 09.12 1.29 0.33 2.10 ± 0.11 48.3 ± 5.1
2017 Jun 10.04 1.30 0.33 1.15 ± 0.10 0.94 ± 0.03 44.6 ± 6.7
2017 Jun 11.12 1.31 0.34 1.81 ± 0.04 0.23 ± 0.08 38.5 ± 5.2
2017 Jun 22.04 1.39 0.40 1.69 ± 0.03 1.81 ± 0.04 0.44 ± 0.02 21.9 ± 1.5 34.1 ± 0.8
2017 Jun 29.12 1.45 0.46 2.03 ± 0.04 2.00 ± 0.04 36.2 ± 0.5
2017 July 20.88 1.63 0.67 1.32 ± 0.04 1.33 ± 0.05 20.5 ± 2.3

Notes. rh and △ are the heliocentric and geocentric distances, respectively. (a)Presents the TRAPPIST-South measurements. The A(0)fρ values are printed at 5000 km from the comet’s nucleus.

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