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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.

Note: Search parameters have been overridden by the selected campaign: None.
Enter list of star names, comma separated.
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Separate multiple observers with commas.
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Found 599522 records

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# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 T CrB BALQ 2461104.0257 2026-03-04 12:36 10.0 N/A Visual Visual
2 T CrB DIL 2461104.0100 2026-03-04 12:14 10.027 0.07 Johnson V CCD
3 T CrB RGED 2461104.0065 2026-03-04 12:09 7.456 0.065 Cousins I CCD
4 T CrB RGED 2461104.0060 2026-03-04 12:08 8.971 0.041 Cousins R CCD
5 T CrB RGED 2461104.0055 2026-03-04 12:07 10.030 0.033 Johnson V CCD
6 T CrB DFR 2461103.9479 2026-03-04 10:45 10.3 N/A Visual Visual
7 T CrB HMB 2461103.8713 2026-03-04 08:54 9.28 0.043 Cousins R CCD
8 T CrB HMB 2461103.8712 2026-03-04 08:54 9.142 0.046 Cousins R CCD
9 T CrB HMB 2461103.8710 2026-03-04 08:54 11.623 0.031 Johnson B CCD
10 T CrB HMB 2461103.8707 2026-03-04 08:53 11.496 0.03 Johnson B CCD
11 T CrB HMB 2461103.8704 2026-03-04 08:53 10.256 0.027 Johnson V CCD
12 T CrB HMB 2461103.8703 2026-03-04 08:53 10.323 0.026 Johnson V CCD
13 T CrB WGR 2461103.8270 2026-03-04 07:50 10.0145 0.0005 Johnson V CCD
14 T CrB WGR 2461103.8264 2026-03-04 07:50 10.007 0.0005 Johnson V CCD
15 T CrB WGR 2461103.8258 2026-03-04 07:49 10.0117 0.0005 Johnson V CCD
16 T CrB WGR 2461103.8251 2026-03-04 07:48 11.4047 0.0016 Johnson B CCD
17 T CrB WGR 2461103.8245 2026-03-04 07:47 11.363 0.0016 Johnson B CCD
18 T CrB WGR 2461103.8239 2026-03-04 07:46 11.3621 0.0016 Johnson B CCD
19 T CrB WGR 2461103.8215 2026-03-04 07:42 12.0799 0.0349 Sloan u CCD
20 T CrB HMB 2461103.7196 2026-03-04 05:16 9.044 0.009 Cousins R CCD
21 T CrB HMB 2461103.7195 2026-03-04 05:16 9.039 0.009 Cousins R CCD
22 T CrB HMB 2461103.7193 2026-03-04 05:15 11.278 0.013 Johnson B CCD
23 T CrB HMB 2461103.7191 2026-03-04 05:15 11.284 0.014 Johnson B CCD
24 T CrB HMB 2461103.7188 2026-03-04 05:15 10.018 0.01 Johnson V CCD
25 T CrB HMB 2461103.7187 2026-03-04 05:14 10.001 0.01 Johnson V CCD