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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.

Enter list of star names, comma separated.
Enter a date in natural language, jd, or utc format.
Enter a date in natural language, jd, or utc format.
Separate multiple observers with commas.
Campaign overrides targets and dates.

Found 616009 records

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# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 T CrB IDG 2460847.9655 2025-06-21 11:10 10.28 0.005 CV CCD
2 T CrB IDG 2460847.9654 2025-06-21 11:10 10.191 0.005 CV CCD
3 T CrB IDG 2460847.9654 2025-06-21 11:10 10.208 0.005 CV CCD
4 T CrB IDG 2460847.9653 2025-06-21 11:10 10.252 0.005 CV CCD
5 T CrB IDG 2460847.9652 2025-06-21 11:09 10.257 0.005 CV CCD
6 T CrB IDG 2460847.9652 2025-06-21 11:09 10.222 0.005 CV CCD
7 T CrB IDG 2460847.9651 2025-06-21 11:09 10.255 0.005 CV CCD
8 T CrB IDG 2460847.9650 2025-06-21 11:09 10.22 0.005 CV CCD
9 T CrB IDG 2460847.9650 2025-06-21 11:09 10.237 0.005 CV CCD
10 T CrB IDG 2460847.9649 2025-06-21 11:09 10.186 0.005 CV CCD
11 T CrB BALQ 2460847.9340 2025-06-21 10:25 10.5 N/A Visual Visual
12 T CrB WGR 2460847.8458 2025-06-21 08:17 11.562 0.012 Sloan u CCD
13 T CrB WGR 2460847.8438 2025-06-21 08:15 11.5157 0.0121 Sloan u CCD
14 T CrB WGR 2460847.8418 2025-06-21 08:12 11.5085 0.0111 Sloan u CCD
15 T CrB WGR 2460847.8398 2025-06-21 08:09 11.4961 0.0107 Sloan u CCD
16 T CrB WGR 2460847.8314 2025-06-21 07:57 11.5279 0.0101 Sloan u CCD
17 T CrB WGR 2460847.8294 2025-06-21 07:54 11.5033 0.0099 Sloan u CCD
18 T CrB WGR 2460847.8274 2025-06-21 07:51 11.502 0.0099 Sloan u CCD
19 T CrB WGR 2460847.8254 2025-06-21 07:48 11.4516 0.009 Sloan u CCD
20 T CrB WGR 2460847.8190 2025-06-21 07:39 11.5159 0.0099 Sloan u CCD
21 T CrB WGR 2460847.8170 2025-06-21 07:36 11.4764 0.01 Sloan u CCD
22 T CrB WGR 2460847.8150 2025-06-21 07:33 11.4496 0.01 Sloan u CCD
23 T CrB WGR 2460847.8111 2025-06-21 07:27 11.4743 0.0099 Sloan u CCD
24 T CrB WGR 2460847.8046 2025-06-21 07:18 11.6318 0.0104 Sloan u CCD
25 T CrB WGR 2460847.8026 2025-06-21 07:15 11.6095 0.0104 Sloan u CCD