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Table A.2
OH, NH, CN, C2, and C3 production rates and A(θ = 0)fρ measurements for comet 21P with the TN and TS telescopes.
| UT date | rh | Production rates (× 1024 mol s−1) | A(θ = 0)fρ | TN/TS | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (au) | OH | NH | CN | C2 | C3 | BC | RC | GC | Rc | Ic | ||
| 2018 Jun. 09 | 1.61 | – | – | – | – | – | – | – | – | 236.5 ± 14.0 | 265.5 ± 18.7 | TN |
| 2018 Jun. 19 | 1.52 | – | – | 25.20 ± 0.52 | 4.30 ± 0.65 | – | 234.8 ± 13.6 | 351.1 ± 17.5 | – | – | 326.9 ± 15.6 | TN |
| 2018 Jun. 22 | 1.49 | 6200 ± 253 | – | 28.00 ± 0.53 | – | 1.50 ± 0.20 | – | – | – | 333.6 ± 16.8 | 367.5 ± 18.4 | TN |
| 2018 Jun. 28 | 1.44 | 9560 ± 365 | – | 32.00 ± 0.64 | – | – | – | 673.7 ± 21.4 | – | 411.0 ± 13.7 | 475.7 ± 12.9 | TN |
| 2018 Jul. 26 | 1.21 | 15 200 ± 322 | 31.30 ± 4.90 | 37.80 ± 0.54 | 8.40 ± 0.66 | 1.08 ± 0.20 | 618.6 ± 36.4 | 801.5 ± 12.9 | – | 687.8 ± 11.5 | 758.2 ± 15.9 | TN |
| 2018 Jul. 30 | 1.18 | 18 100 ± 278 | – | 45.50 ± 0.63 | 12.60 ± 0.65 | – | – | – | – | 959.8 ± 15.8 | – | TN |
| 2018 Aug. 17 | 1.07 | 28 300 ± 558 | 54.10 ± 4.59 | 52.00 ± 0.65 | 17.90 ± 0.64 | 2.52 ± 0.19 | 1087.6 ± 13.7 | 1646.1 ± 12.7 | – | 1502.7 ± 12.1 | 1609.3 ± 12.7 | TN |
| 2018 Aug. 18 | 1.07 | 25 600 ± 276 | – | 50.80 ± 0.64 | 18.00 ± 0.62 | 2.47 ± 0.17 | – | – | – | 1522.1 ± 11.6 | 1648.9 ± 10.3 | TN |
| 2018 Aug. 23 | 1.04 | 27 300 ± 304 | 50.20 ± 3.60 | 55.20 ± 0.67 | 19.20 ± 0.64 | 2.55 ± 0.17 | 1028.9 ± 12.5 | 1570.7 ± 11.8 | – | 1463.7 ± 11.7 | 1570.2 ± 10.0 | TN |
| 2018 Aug. 29 | 1.03 | 23 000 ± 286 | 43.50 ± 4.07 | 42.50 ± 0.62 | 13.70 ± 0.62 | 1.66 ± 0.18 | 887.6 ± 29.6 | 1229.9 ± 12.5 | – | 1100.0 ± 12.7 | 1176.3 ± 16.1 | TN |
| 2018 Sep. 05 | 1.01 | 20 800 ± 312 | – | 38.20 ± 0.64 | 14.00 ± 0.63 | 1.95 ± 0.17 | 651.2 ± 12.4 | – | – | 933.1 ± 10.5 | 984.0 ± 14.8 | TN |
| 2018 Sep. 09 | 1.01 | 23 600 ± 328 | 56.60 ± 3.86 | 43.90 ± 0.68 | 16.70 ± 0.64 | 2.26 ± 0.17 | 723.3 ± 12.4 | 1103.1 ± 15.7 | 815.5 ± 12.4 | 1062.9 ± 12.7 | 1123.3 ± 12.1 | TN |
| 2018 Sep. 17 | 1.01 | 17 100 ± 300 | 39.80 ± 3.77 | 37.10 ± 0.66 | 11.60 ± 0.64 | 1.91 ± 0.18 | 574.6 ± 14.1 | 861.6 ± 12.4 | 642.0 ± 10.7 | 799.0 ± 15.1 | 833.7 ± 14.0 | TN |
| 2018 Sep. 17 | 1.01 | 14 700 ± 326 | 38.30 ± 3.84 | 37.60 ± 0.53 | 12.30 ± 0.63 | 2.02 ± 0.22 | 571.6 ± 19.6 | 851.4 ± 17.2 | 599.9 ± 19.2 | 767.0 ± 16.2 | 832.1 ± 14.8 | TS |
| 2018 Sep. 18 | 1.01 | – | – | 30.00 ± 0.52 | 11.00 ± 0.65 | 2.07 ± 0.28 | 459.5 ± 34.2 | 872.2 ± 22.2 | 595.9 ± 14.8 | 733.3 ± 14.8 | 849.6 ± 20.4 | TS |
| 2018 Sep. 21 | 1.02 | – | – | – | – | – | – | – | – | 604.7 ± 16.6 | 652.2 ± 14.9 | TN |
| 2018 Sep. 21 | 1.02 | 1280 ± 212 | 28.50 ± 3.79 | 33.00 ± 0.52 | 10.90 ± 0.63 | 1.72 ± 0.22 | 542.3 ± 17.4 | 808.3 ± 12.5 | 606.4 ± 19.9 | 658.3 ± 14.9 | 779.5 ± 21.4 | TS |
| 2018 Sep. 22 | 1.02 | 13 600 ± 216 | 29.40 ± 3.84 | 32.80 ± 0.51 | 10.80 ± 0.65 | 1.64 ± 0.23 | 510.9 ± 17.4 | 744.0 ± 15.0 | 569.2 ± 12.5 | 649.8 ± 12.5 | 740.3 ± 14.7 | TS |
| 2018 Sep. 23 | 1.02 | 12 800 ± 249 | – | 28.60 ± 0.61 | 9.48 ± 0.62 | – | 394.5 ± 12.5 | 596.1 ± 12.5 | – | – | 629.3 ± 15.2 | TN |
| 2018 Sep. 25 | 1.03 | 10 880 ± 216 | 29.00 ± 4.15 | 27.30 ± 0.54 | 9.62 ± 0.76 | 1.24 ± 0.31 | 406.8 ± 22.4 | 611.7 ± 19.9 | 460.0 ± 20.1 | 540.5 ± 14.8 | 611.6 ± 15.3 | TS |
| 2018 Sep. 29 | 1.04 | 11 300 ± 254 | 23.80 ± 4.11 | 24.50 ± 0.58 | 7.21 ± 0.67 | 0.79 ± 0.19 | 368.1 ± 20.4 | 517.1 ± 15.1 | 530.7 ± 17.8 | 535.4 ± 15.2 | TN | |
| 2018 Oct. 01 | 1.05 | 10 220 ± 217 | 18.40 ± 3.68 | 22.40 ± 0.52 | 7.84 ± 0.64 | 1.13 ± 0.23 | 381.4 ± 23.2 | 490.7 ± 20.6 | 368.1 ± 21.9 | 418.3 ± 15.3 | 478.8 ± 15.7 | TS |
| 2018 Oct. 02 | 1.06 | 9860 ± 182 | 19.50 ± 3.27 | 21.70 ± 0.52 | 6.55 ± 0.71 | 1.04 ± 0.21 | 350.8 ± 15.3 | – | – | – | – | TS |
| 2018 Oct. 04 | 1.07 | 9460 ± 268 | 20.20 ± 0.55 | 5.95 ± 0.63 | 0.70 ± 0.18 | 282.6 ± 14.0 | 412.3 ± 12.2 | – | 411.2 ± 12.2 | 437.4 ± 15.4 | TN | |
| 2018 Oct. 08 | 1.08 | 8340 ± 248 | 10.70 ± 3.53 | 16.80 ± 0.53 | 4.03 ± 0.61 | 0.36 ± 0.17 | – | 318.5 ± 19.9 | – | 350.5 ± 12.2 | 350.5 ± 18.3 | TN |
| 2018 Oct. 12 | 1.10 | 5950 ± 248 | – | 15.80 ± 0.52 | 4.24 ± 0.63 | – | 199.7 ± 12.3 | 280.1 ± 19.1 | – | 294.6 ± 12.8 | 296.5 ± 20.4 | TN |
| 2018 Oct. 14 | 1.12 | 4730 ± 247 | 11.00 ± 4.16 | 13.30 ± 0.52 | 3.90 ± 0.67 | – | 190.9 ± 25.7 | – | – | 234.0 ± 17.3 | 269.8 ± 20.5 | TS |
| 2018 Oct. 15 | 1.12 | – | – | – | – | – | 166.9 ± 18.3 | 257.9 ± 18.6 | 192.1 ± 21.2 | 226.1 ± 13.3 | – | TS |
| 2018 Oct. 18 | 1.14 | – | – | – | – | – | 151.0 ± 17.2 | – | – | 208.2 ± 12.4 | 230.8 ± 11.7 | TS |
| 2018 Oct. 18 | 1.14 | – | – | 10.80 ± 0.54 | – | – | – | – | – | 229.7 ± 14.3 | – | TN |
| 2018 Oct. 21 | 1.16 | – | – | 9.87 ± 0.51 | 3.02 ± 0.65 | – | – | – | – | 198.2 ± 19.4 | – | TN |
| 2018 Oct. 22 | 1.17 | 3500 ± 188 | 9.04 ± 0.50 | 2.30 ± 0.65 | 0.34 ± 0.21 | 137.6 ± 21.1 | 149.0 ± 26.1 | – | 114.4 ± 13.3 | 127.9 ± 14.4 | TS | |
| 2018 Oct. 25 | 1.19 | – | – | – | – | – | – | – | – | 111.5 ± 20.0 | – | TS |
| 2018 Oct. 28 | 1.21 | – | – | 6.00 ± 0.55 | – | – | – | 151.2 ± 13.8 | 117.2 ± 16.5 | 137.6 ± 12.1 | 144.7 ± 14.1 | TS |
| 2018 Nov. 01 | 1.24 | 2320 ± 234 | – | 6.88 ± 0.56 | – | – | – | 108.1 ± 18.6 | 85.7 ± 23.6 | 109.6 ± 15.7 | 123.2 ± 12.4 | TS |
| 2018 Nov. 05 | 1.27 | 2010 ± 191 | – | 5.62 ± 0.52 | 1.16 ± 0.66 | – | 95.7 ± 20.4 | 120.5 ± 21.8 | 50.1 ± 16.2 | 121.1 ± 15.4 | 139.0 ± 15.0 | TS |
| 2018 Nov. 09 | 1.31 | – | – | – | – | – | – | – | – | 88.8 ± 13.4 | 129.3 ± 15.6 | TS |
| 2018 Nov. 14 | 1.35 | – | – | 4.39 ± 0.55 | 1.27 ± 0.69 | – | 85.5 ± 13.2 | 88.7 ± 18.7 | 87.2 ± 14.6 | 86.9 ± 13.6 | 91.3 ± 12.0 | TS |
| 2018 Dec. 07 | 1.55 | – | – | 3.30 ± 0.52 | – | – | – | – | – | 42.9 ± 10.5 | 71.7 ± 13.2 | TS |
| 2018 Dec. 10 | 1.58 | – | – | 3.00 ± 0.56 | – | – | – | 75.9 ± 14.2 | 28.1 ± 13.9 | – | TS | |
| 2018 Dec. 19 | 1.66 | – | – | 3.30 ± 0.54 | – | – | – | 80.6 ± 12.5 | 27.2 ± 11.5 | 172.3 ± 18.2 | TS | |
| 2018 Dec. 29 | 1.75 | – | – | – | – | – | – | – | – | – | 57.9 ± 18.1 | TS |
| 2019 Jan. 14 | 1.90 | – | – | – | – | – | – | – | – | 60.7 ± 11.1 | – | TS |
| 2019 Jan. 15 | 1.91 | – | – | – | – | – | – | – | – | 57.2 ± 11.0 | 60.4 ± 11.6 | TS |
| 2019 Jan. 29 | 2.04 | – | – | – | – | – | – | – | – | 85.5 ± 11.4 | 93.5 ± 11.5 | TS |
| 2019 Feb. 02 | 2.08 | – | – | – | – | – | – | – | – | 83.7 ± 12.5 | 91.6 ± 11.3 | TS |
| 2019 Feb. 04 | 2.10 | – | – | – | – | – | – | – | – | 71.5 ± 22.0 | 96.3 ± 17.1 | TS |
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