Table A.2
Log of observations of comet C/2022 E3 (ZTF) in 2023.
| UT date (mm/dd.d-dd.d) | <rh > (au) | <Δ > (au) | Phase(a) | Tel. | Integ. time (min)(c) | pwv(b) (mm) | Mode(d) | Freq. range (GHz) |
|---|---|---|---|---|---|---|---|---|
| 01/19.33–19.42 | 1.117 | 0.523 | 61.7° | Odin | 81 | 0 | DSW | 556.43–557.44 |
| 01/19.45–19.75 | 1.118 | 0.516 | 61.7° | Odin | 233 | 0 | DSW | 556.43-557.44, map 3x3, step 1′ |
| 01/19.78–19.88 | 1.118 | 0.511 | 61.6° | Odin | 85 | 0 | DSW | 556.43-557.44 |
| 01/19.98–20.14 | 1.119 | 0.504 | 61.6° | Odin | 108 | 0 | DSW | 556.43-557.44, map 3x3, step 2′ |
| 01/20.19–20.28 | 1.119 | 0.501 | 61.5° | Odin | 72 | 0 | DSW | 556.43-557.44 |
| 02/03.67–03.78 | 1.168 | 0.291 | 45.4° | IRAM | 93 | 0.8 | PSW | 248.3-256.4, 264.3-272.4 |
| 02/04.65–04.69 | 1.173 | 0.300 | 45.5° | IRAM | 39 | 0.5 | PSW | 248.3-256.4, 264.3-272.4 |
| 04.71–04.78 | 1.173 | 0.301 | 45.5° | IRAM | 65 | 0.2 | PSW | 240.1-248.2, 256.1-264.2 |
| 04.81–04.86 | 1.174 | 0.302 | 45.5° | IRAM | 56 | 0.3 | PSW | 240.1-248.2, 256.1-264.2 |
| 04.88–04.95 | 1.174 | 0.303 | 45.5° | IRAM | 76 | 0.2 | PSW | 146.8-154.9, 162.8-170.9 |
| 04.97–05.02 | 1.174 | 0.304 | 45.6° | IRAM | 59 | 0.2 | PSW | 209.4-217.5, 225.4-233.5 |
| 05.03–05.04 | 1.175 | 0.304 | 45.6° | IRAM | 16 | 1.1 | PSW | 161.0-169.1, 177.0-185.4 |
| 02/05.65–05.69 | 1.178 | 0.312 | 45.8° | IRAM | 40 | 1.8 | PSW | 248.3-256.4, 264.3-272.4 |
| 05.71–05.81 | 1.178 | 0.314 | 45.8° | IRAM | 94 | 0.9 | PSW | 217.5-225.5, 233.5-241.5 |
| 05.84–05.89 | 1.179 | 0.315 | 45.9° | IRAM | 58 | 0.5 | PSW | 146.8-154.9, 162.8-170.9 |
| 05.91–06.00 | 1.179 | 0.317 | 45.9° | IRAM | 95 | 0.4 | PSW | 209.4-217.5, 225.4-233.5 |
| 06.03–06.04 | 1.180 | 0.318 | 46.0° | IRAM | 17 | 0.8 | PSW | 248.3-256.4, 264.3-272.4 |
| 02/06.66–06.69 | 1.183 | 0.328 | 46.0° | IRAM | 31 | 1.7 | WSW | 248.3-256.4, 264.3-272.4 |
| 06.69–06.70 | 1.183 | 0.328 | 46.0° | IRAM | 8 | 1.6 | PSW | 248.3-256.4, 264.3-272.4 |
| 06.71–06.73 | 1.183 | 0.329 | 46.0° | IRAM | 23 | 2.0 | WSW | 248.3-256.4, 264.3-272.4 |
| 06.75–06.80 | 1.184 | 0.329 | 46.0° | IRAM | 48 | 3.5 | WSW | 240.1-248.2, 256.1-264.2 |
| 06.88–06.90 | 1.184 | 0.331 | 46.0° | IRAM | 23 | 1.7 | WSW | 209.4-217.5, 225.4-233.5 |
| 06.92–07.00 | 1.185 | 0.333 | 46.0° | IRAM | 91 | 2.5 | WSW | 209.4-217.5, 225.4-233.5 |
| 07.02–07.04 | 1.185 | 0.334 | 46.0° | IRAM | 25 | 1.9 | WSW | 146.8-154.9, 162.8-170.9 |
Notes. (a)Phase angle. (b)Mean precipitable water vapour in the atmosphere above the telescope. (c)Total (offset positions included) integration time (ON+OFF) on the source. (d)Observing mode: WSW = Wobbler Switching (reference at ±2′); PSW = Position Switching (reference at 4′), DSW = Dicke Switching (reference at ~42°).
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