Table A.4
Position angle of the dust tail of 41P.
| Time to/from | Inst. | PA | PA | PA | PA | PA |
|---|---|---|---|---|---|---|
| Perihelion | Tail | r vector | v vector | r - Tail | v - Tail | |
| (days) | (deg) | (deg) | (deg) | (deg) | (deg) | |
| −32.73 | 3KK | 150 | 148.2 | 263.8 | −1.8 | 113.8 |
| −31.71 | 3KK | 152 | 149.2 | 263.1 | −2.8 | 111.1 |
| −30.90 | 3KK | 155 | 150.0 | 262.7 | −5.0 | 107.7 |
| −19.64 | 3KK | 170 | 167.1 | 264.0 | −2.9 | 94.0 |
| −18.84 | 3KK | 168 | 169.0 | 265.1 | 1.0 | 97.1 |
| −17.97 | 3KK | 168 | 171.3 | 266.5 | 3.3 | 98.5 |
| −16.95 | 3KK | 170 | 174.2 | 268.4 | 4.2 | 98.4 |
| −15.71 | 3KK | 175 | 177.8 | 271.0 | 2.8 | 96.0 |
| −14.79 | 3KK | 177 | 180.9 | 273.4 | 3.9 | 96.4 |
| −13.88 | 3KK | 187 | 184.1 | 276.0 | −2.9 | 89.0 |
| −12.95 | 3KK | 185 | 187.5 | 278.7 | 2.5 | 93.7 |
| −9.73 | 3KK | 197 | 199.8 | 289.5 | 2.8 | 92.5 |
| −3.61 | 3KK | 215 | 220.4 | 308.7 | 5.4 | 93.7 |
| −2.67 | 3KK | 225 | 222.9 | 311.1 | −2.1 | 86.1 |
| −2.61 | WWFI | 220 | 222.9 | 311.1 | 2.9 | 91.1 |
| −0.64 | 3KK | 228 | 227.0 | 315.2 | −1.0 | 87.2 |
| −0.61 | WWFI | 225 | 227.0 | 315.2 | 2.0 | 90.2 |
| 8.30 | 3KK | 235 | 235.5 | 323.8 | 0.5 | 88.8 |
| 8.34 | WWFI | 235 | 235.5 | 323.8 | 0.5 | 88.8 |
| 11.36 | WWFI | 230 | 236.0 | 324.2 | 6.0 | 94.2 |
| 12.22 | 3KK | 240 | 236.0 | 324.2 | −4.0 | 84.2 |
| 17.22 | WWFI | 230 | 235.3 | 323.0 | 5.3 | 93.0 |
| 18.22 | WWFI | 230 | 235.1 | 322.6 | 5.1 | 92.6 |
| 23.26 | 3KK | 235 | 233.3 | 319.8 | −1.7 | 84.8 |
| 27.24 | 3KK | 235 | 231.6 | 317.0 | −3.4 | 82.0 |
| 27.28 | WWFI | 235 | 231.5 | 317.0 | −3.5 | 82.0 |
| 28.33 | WWFI | 230 | 231.1 | 316.2 | 1.1 | 86.2 |
| 31.10 | 3KK | 230 | 229.7 | 313.9 | −0.3 | 83.9 |
| 31.26 | WWFI | 231 | 229.7 | 313.9 | −1.3 | 82.9 |
| 34.20 | WWFI | 230 | 228.0 | 311.2 | −2.0 | 81.2 |
| 36.14 | 3KK | 230 | 226.9 | 309.4 | −3.1 | 79.4 |
| 36.23 | WWFI | 230 | 226.8 | 309.3 | −3.2 | 79.3 |
| 39.27 | WWFI | 222 | 225.0 | 306.6 | 3.0 | 84.6 |
| 40.17 | WWFI | 225 | 224.4 | 305.7 | −0.6 | 80.7 |
| 43.20 | WWFI | 225 | 222.4 | 303.0 | −2.6 | 78.0 |
| 47.13 | WWFI | 225 | 219.5 | 299.5 | −5.5 | 74.5 |
| 51.21 | WWFI | 220 | 216.2 | 296.1 | −3.8 | 76.1 |
| 52.22 | WWFI | 220 | 215.2 | 295.2 | −4.8 | 75.2 |
| 53.26 | WWFI | 220 | 214.2 | 294.4 | −5.8 | 74.4 |
| 54.21 | WWFI | 210 | 213.3 | 293.6 | 3.3 | 83.6 |
| 57.14 | WWFI | 210 | 210.1 | 291.5 | 0.1 | 81.5 |
| 58.27 | WWFI | 205 | 207.5 | 290.0 | 2.5 | 85.0 |
| 62.21 | WWFI | 205 | 203.4 | 288.1 | −1.6 | 83.1 |
| 63.27 | WWFI | 210 | 201.7 | 287.5 | −8.3 | 77.5 |
| 70.19 | WWFI | 190 | 188.1 | 283.9 | −1.9 | 93.9 |
| 72.29 | WWFI | 190 | 180.3 | 282.6 | −9.7 | 92.6 |
| 76.16 | WWFI | 180 | 172.1 | 281.6 | −7.9 | 101.6 |
| 82.27 | WWFI | ne | 149.7 | 279.5 | ne | ne |
| 92.16 | WWFI | ne | 125.7 | 277.6 | ne | ne |
| 95.20 | WWFI | 135 | 119.6 | 277.2 | −15.4 | 142.2 |
| 96.14 | WWFI | 135 | 117.9 | 277.0 | −17.1 | 142.0 |
Notes. The table lists the observing epoch (in days to/from perihelion), the instrument used (Inst.), the position angle PA (counted east over north) of the tail at the nucleus position in the image (PA Tail), the position angle of the extended radius vector of the comet projected in the sky (“PA r vector”), the “PA” of the velocity vector of the comet projected in the sky (“PA v vector”), the difference between “PA Tail” and “PA r vector”, the difference between “PA Tail” and “PA v vector”. “ne” stands for not estimated. “PA Tail” is given for the SDSS r filter images except for epoch 31.26 days for which it is obtained for SDSS i filter. The uncertainty of “PA Tail” measurements is ± 3 deg.
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