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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 162320 records
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| # | Target | Observer | Julian Date | UTC Date | Magnitude | Uncertainty | Band | Type |
|---|---|---|---|---|---|---|---|---|
| 1 | CH Cyg | JGRC | 2460855.6322 | 2025-06-29 03:10 | 7.988 | 0.009 | TG | CCD |
| 2 | CH Cyg | VGK | 2460854.2903 | 2025-06-27 18:58 | 7.6 | N/A | Visual | Visual |
| 3 | CH Cyg | VATA | 2460852.3875 | 2025-06-25 21:18 | 8.0 | N/A | Visual | Visual |
| 4 | CH Cyg | JGRC | 2460851.6615 | 2025-06-25 03:52 | 7.965 | 0.007 | TG | CCD |
| 5 | CH Cyg | JGRC | 2460850.6432 | 2025-06-24 03:26 | 7.98 | 0.007 | TG | CCD |
| 6 | CH Cyg | PYG | 2460850.4778 | 2025-06-23 23:28 | 8.2 | N/A | Visual | Visual |
| 7 | CH Cyg | PBYA | 2460850.4729 | 2025-06-23 23:21 | 8.0 | N/A | Visual | Visual |
| 8 | CH Cyg | MSS | 2460849.6931 | 2025-06-23 04:38 | 8.4 | N/A | Visual | Visual |
| 9 | CH Cyg | SEDB | 2460849.6710 | 2025-06-23 04:06 | 8.0 | N/A | Visual | Visual |
| 10 | CH Cyg | JGRC | 2460849.6334 | 2025-06-23 03:12 | 7.944 | 0.008 | TG | CCD |
| 11 | CH Cyg | JGRC | 2460848.6544 | 2025-06-22 03:42 | 7.982 | 0.007 | TG | CCD |
| 12 | CH Cyg | NOT | 2460848.4197 | 2025-06-21 22:04 | 6.384 | 0.007 | Cousins R | CCD |
| 13 | CH Cyg | NOT | 2460848.4191 | 2025-06-21 22:03 | 7.783 | 0.006 | Johnson V | CCD |
| 14 | CH Cyg | NOT | 2460848.4186 | 2025-06-21 22:02 | 9.406 | 0.007 | Johnson B | CCD |
| 15 | CH Cyg | KIS | 2460848.3790 | 2025-06-21 21:05 | 7.8 | N/A | Visual | Visual |
| 16 | CH Cyg | KWO | 2460848.3556 | 2025-06-21 20:32 | 8.1 | N/A | Visual | Visual |
| 17 | CH Cyg | MMAE | 2460846.7550 | 2025-06-20 06:07 | 8.813 | 0.144 | Johnson V | CCD |
| 18 | CH Cyg | KIS | 2460846.3560 | 2025-06-19 20:32 | 7.4 | N/A | Visual | Visual |
| 19 | CH Cyg | CKB | 2460845.6625 | 2025-06-19 03:54 | 7.9 | N/A | Visual | Visual |
| 20 | CH Cyg | HMAJ | 2460845.4660 | 2025-06-18 23:10 | 8.1 | N/A | Visual | Visual |
| 21 | CH Cyg | KWO | 2460844.3556 | 2025-06-17 20:32 | 8.2 | N/A | Visual | Visual |
| 22 | CH Cyg | CKB | 2460843.9368 | 2025-06-17 10:29 | 7.6 | N/A | Visual | Visual |
| 23 | CH Cyg | PYG | 2460843.4806 | 2025-06-16 23:32 | 7.7 | N/A | Visual | Visual |
| 24 | CH Cyg | WKE | 2460843.4614 | 2025-06-16 23:04 | 7.824 | 0.022 | Johnson V | CCD |
| 25 | CH Cyg | WKE | 2460843.4583 | 2025-06-16 22:59 | 9.419 | 0.033 | Johnson B | CCD |