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The AAVSO International Database is a repository of variable star observations contributed by amateur and professional astronomers worldwide. Use the form below to search for observations of specific stars or by specific observers.
Found 66561 records
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| # | Target | Observer | Julian Date | UTC Date | Magnitude | Uncertainty | Band | Type |
|---|---|---|---|---|---|---|---|---|
| 1 | R CYG | YON | 2447000.6000 | 1987-07-24 02:24 | 13.6 | N/A | Visual | Visual |
| 2 | R CYG | MRX | 2447001.5000 | 1987-07-25 00:00 | 13.8 | N/A | Visual | Visual |
| 3 | R CYG | AB | 2447001.8570 | 1987-07-25 08:34 | 13.6 | N/A | Visual | Visual |
| 4 | R CYG | TDM | 2447002.6000 | 1987-07-26 02:24 | 12.5 | N/A | Visual | Visual |
| 5 | R CYG | BJK | 2447003.6000 | 1987-07-27 02:24 | 8.5 | N/A | Visual | Visual |
| 6 | R CYG | VGJ | 2447003.7130 | 1987-07-27 05:06 | 13.6 | N/A | Visual | Visual |
| 7 | R CYG | AB | 2447004.0210 | 1987-07-27 12:30 | 13.6 | N/A | Visual | Visual |
| 8 | R CYG | BJK | 2447004.6000 | 1987-07-28 02:24 | 8.5 | N/A | Visual | Visual |
| 9 | R CYG | FJH | 2447005.5000 | 1987-07-29 00:00 | 13.7 | N/A | Visual | Visual |
| 10 | R CYG | MJW | 2447005.7000 | 1987-07-29 04:48 | 13.6 | N/A | Visual | Visual |
| 11 | R CYG | AB | 2447006.7680 | 1987-07-30 06:25 | 13.0 | N/A | Visual | Visual |
| 12 | R CYG | AB | 2447007.8170 | 1987-07-31 07:36 | 13.6 | N/A | Visual | Visual |
| 13 | R CYG | BDS | 2447008.7000 | 1987-08-01 04:48 | 9.9 | N/A | Visual | Visual |
| 14 | R CYG | LJO | 2447010.4000 | 1987-08-02 21:35 | 13.4 | N/A | Visual | Visual |
| 15 | R CYG | DPA | 2447010.4860 | 1987-08-02 23:39 | 13.6 | N/A | Visual | Visual |
| 16 | R CYG | AB | 2447010.8020 | 1987-08-03 07:14 | 13.0 | N/A | Visual | Visual |
| 17 | R CYG | HSR | 2447012.4000 | 1987-08-04 21:35 | 14.1 | N/A | Visual | Visual |
| 18 | R CYG | BJK | 2447012.6000 | 1987-08-05 02:24 | 13.5 | N/A | Visual | Visual |
| 19 | R CYG | FJH | 2447013.5000 | 1987-08-06 00:00 | 13.7 | N/A | Visual | Visual |
| 20 | R CYG | IML | 2447014.6000 | 1987-08-07 02:24 | 13.9 | N/A | Visual | Visual |
| 21 | R CYG | MRX | 2447015.4000 | 1987-08-07 21:35 | 13.9 | N/A | Visual | Visual |
| 22 | R CYG | BDS | 2447018.2000 | 1987-08-10 16:48 | 9.9 | N/A | Visual | Visual |
| 23 | R CYG | MMI | 2447018.4000 | 1987-08-10 21:35 | 12.4 | N/A | Visual | Visual |
| 24 | R CYG | FCA | 2447018.6000 | 1987-08-11 02:24 | 12.4 | N/A | Visual | Visual |
| 25 | R CYG | BTY | 2447021.6000 | 1987-08-14 02:24 | 13.8 | N/A | Visual | Visual |