Observation catalog of 21P/Giacobini-Zinner
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There are 191 observations of this comet
| User | Observation's time (UT) | Magnitude | Coma diameter(') | Condensation | Tool | ||
|---|---|---|---|---|---|---|---|
| Hasubick W. | 1998-12-15 16:47:00 | 9.7 | 2.4 | 3 | 10B (25x) |  | |
| Hasubick W. | 1999-01-06 17:31:00 | 11.5 | 0.5 | 5 | 44L (63x) | | |
| Hasubick W. | 1999-01-19 17:31:00 | 11.5 | 0.9 | 3 | 44L (156x) | | |
| Hasubick W. | 1999-03-12 18:57:00 | 13.6 | 0.4 | 3 | 44L (156x) | | |
| Hasubick W. | 2011-11-25 17:16:00 | 13.4 | 0.8 | 4 | 44L (100x) | | |
| . | 1985-07-12 22:48:00 | 9.2 | 1.5 | 4 | 20.3T (62x) | | |
| . | 1985-07-21 22:04:00 | 9.3 | 1.6 | 5 | 20.3T (62x) | | |
| . | 1985-08-02 21:50:00 | 8.6 | 1.8 | 4 | 14S (45x) | | |
| . | 1985-08-08 23:31:00 | 8.4 | 5.6 | 6 | 14S (28x) | | |
| . | 1985-08-11 00:14:00 | 8.4 | 3.6 | 5 | 14S (25x) | |
