| Name | Date/time | RA | Dec | Magnitude | Filter | Site Code |
|---|---|---|---|---|---|---|
| C/1917 H1 | 1917 05 05.15783 | 23 20 36.13 | +17 05 38.5 | 008 | ||
| C/1917 H1 | 1917 05 23.83221 | 04 19 57.52 | +59 37 08.6 | 531 | ||
| C/1917 H1 | 1917 05 25.83016 | 06 05 27.78 | +57 04 56.9 | 531 | ||
| C/1917 H1 | 1917 05 26.84862 | 06 46 54.32 | +54 11 00.0 | 531 | ||
| C/1917 H1 | 1917 05 28.85572 | 07 43 34.10 | +47 33 03.7 | 531 | ||
| C/1917 H1 | 1917 05 31.82455 | 08 29 32.93 | +38 36 34.4 | 531 | ||
| C/1917 H1 | 1917 06 06.84584 | 09 08 58.25 | +26 49 18.1 | 531 | ||
| C/1917 H1 | 1917 06 07.83715 | 09 12 31.99 | +25 29 30.9 | 531 | ||
| C/1917 H1 | 1917 06 10.85363 | 09 20 55.91 | +22 07 54.4 | 531 | ||
| C/1917 H1 | 1917 06 13.88363 | 09 26 51.56 | +19 32 25.2 | 008 | ||
| C/1917 H1 | 1917 06 15.84782 | 09 29 52.12 | +18 09 24.0 | 531 | ||
| C/1917 H1 | 1917 06 18.86865 | 09 33 34.73 | +16 22 16.6 | 008 | ||
| C/1917 H1 | 1917 06 21.87092 | 09 36 31.89 | +14 54 14.6 | 008 |