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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 15751 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 AM HER PYG 2457111.6070 2015-03-30 02:34 13.2 N/A Visual Visual
2 AM HER MATA 2457116.3106 2015-04-03 19:27 13.071 0.037 Johnson V CCD
3 AM HER MATA 2457116.3114 2015-04-03 19:28 13.040 0.038 Johnson V CCD
4 AM HER MATA 2457116.3122 2015-04-03 19:29 13.198 0.039 Johnson V CCD
5 AM HER MATA 2457116.3131 2015-04-03 19:30 13.131 0.038 Johnson V CCD
6 AM HER MATA 2457116.3139 2015-04-03 19:32 13.067 0.034 Johnson V CCD
7 AM HER MATA 2457116.3147 2015-04-03 19:33 12.915 0.037 Johnson V CCD
8 AM HER MATA 2457116.3156 2015-04-03 19:34 12.846 0.035 Johnson V CCD
9 AM HER MATA 2457116.3164 2015-04-03 19:35 12.885 0.036 Johnson V CCD
10 AM HER MATA 2457116.3172 2015-04-03 19:36 12.976 0.035 Johnson V CCD
11 AM HER MATA 2457116.3181 2015-04-03 19:38 13.105 0.036 Johnson V CCD
12 AM HER MATA 2457116.3189 2015-04-03 19:39 13.285 0.037 Johnson V CCD
13 AM HER MATA 2457116.3197 2015-04-03 19:40 13.258 0.036 Johnson V CCD
14 AM HER MATA 2457116.3206 2015-04-03 19:41 13.168 0.035 Johnson V CCD
15 AM HER MATA 2457116.3214 2015-04-03 19:42 13.236 0.035 Johnson V CCD
16 AM HER MATA 2457116.3222 2015-04-03 19:44 13.090 0.035 Johnson V CCD
17 AM HER MATA 2457116.3231 2015-04-03 19:45 13.051 0.034 Johnson V CCD
18 AM HER MATA 2457116.3239 2015-04-03 19:46 13.171 0.035 Johnson V CCD
19 AM HER MATA 2457116.3247 2015-04-03 19:47 13.268 0.035 Johnson V CCD
20 AM HER MATA 2457116.3256 2015-04-03 19:48 13.025 0.036 Johnson V CCD
21 AM HER MATA 2457116.3264 2015-04-03 19:50 13.289 0.036 Johnson V CCD
22 AM HER MATA 2457116.3272 2015-04-03 19:51 13.235 0.034 Johnson V CCD
23 AM HER MATA 2457116.3281 2015-04-03 19:52 13.148 0.036 Johnson V CCD
24 AM HER MATA 2457116.3289 2015-04-03 19:53 13.195 0.035 Johnson V CCD
25 AM HER MATA 2457116.3297 2015-04-03 19:54 13.133 0.033 Johnson V CCD