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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.
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| # | Target | Observer | Julian Date | UTC Date | Magnitude | Uncertainty | Band | Type |
|---|---|---|---|---|---|---|---|---|
| 1 | T CrB | WLY | 2460857.6181 | 2025-07-01 02:50 | 10.2 | N/A | Visual | Visual |
| 2 | T CrB | EHEA | 2460857.5607 | 2025-07-01 01:27 | 10.082 | 0.018 | TG | DSLR |
| 3 | T CrB | EHEA | 2460857.5594 | 2025-07-01 01:25 | 10.045 | 0.018 | TG | DSLR |
| 4 | T CrB | EHEA | 2460857.5585 | 2025-07-01 01:24 | 10.023 | 0.017 | TG | DSLR |
| 5 | T CrB | EHEA | 2460857.5577 | 2025-07-01 01:23 | 10.086 | 0.018 | TG | DSLR |
| 6 | T CrB | EHEA | 2460857.5567 | 2025-07-01 01:21 | 10.074 | 0.018 | TG | DSLR |
| 7 | T CrB | EHEA | 2460857.5557 | 2025-07-01 01:20 | 10.031 | 0.017 | TG | DSLR |
| 8 | T CrB | EHEA | 2460857.5547 | 2025-07-01 01:18 | 9.985 | 0.017 | TG | DSLR |
| 9 | T CrB | EHEA | 2460857.5538 | 2025-07-01 01:17 | 10.029 | 0.017 | TG | DSLR |
| 10 | T CrB | EHEA | 2460857.5527 | 2025-07-01 01:15 | 10.039 | 0.017 | TG | DSLR |
| 11 | T CrB | EHEA | 2460857.5516 | 2025-07-01 01:14 | 10.023 | 0.017 | TG | DSLR |
| 12 | T CrB | EHEA | 2460857.5506 | 2025-07-01 01:12 | 10.028 | 0.017 | TG | DSLR |
| 13 | T CrB | EHEA | 2460857.5496 | 2025-07-01 01:11 | 10.028 | 0.017 | TG | DSLR |
| 14 | T CrB | EHEA | 2460857.5487 | 2025-07-01 01:10 | 10.029 | 0.016 | TG | DSLR |
| 15 | T CrB | EHEA | 2460857.5478 | 2025-07-01 01:08 | 10.050 | 0.017 | TG | DSLR |
| 16 | T CrB | MHOC | 2460857.5477 | 2025-07-01 01:08 | 9.2521 | 0.0149 | TR | CCD |
| 17 | T CrB | EHEA | 2460857.5470 | 2025-07-01 01:07 | 10.054 | 0.017 | TG | DSLR |
| 18 | T CrB | MHOC | 2460857.5470 | 2025-07-01 01:07 | 9.2618 | 0.0147 | TR | CCD |
| 19 | T CrB | MHOC | 2460857.5462 | 2025-07-01 01:06 | 10.0414 | 0.0134 | TG | CCD |
| 20 | T CrB | MHOC | 2460857.5462 | 2025-07-01 01:06 | 9.2849 | 0.0143 | TR | CCD |
| 21 | T CrB | EHEA | 2460857.5460 | 2025-07-01 01:06 | 10.058 | 0.016 | TG | DSLR |
| 22 | T CrB | MHOC | 2460857.5455 | 2025-07-01 01:05 | 10.0231 | 0.0133 | TG | CCD |
| 23 | T CrB | MHOC | 2460857.5455 | 2025-07-01 01:05 | 9.2477 | 0.014 | TR | CCD |
| 24 | T CrB | EHEA | 2460857.5451 | 2025-07-01 01:04 | 10.019 | 0.016 | TG | DSLR |
| 25 | T CrB | MHOC | 2460857.5448 | 2025-07-01 01:04 | 10.0125 | 0.0127 | TG | CCD |