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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 1625 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 DQ Her MEV 2455060.5350 2009-08-17 00:50 16.5 N/A Unfiltered with V Zeropoint CCD
2 DQ Her WDZ 2455060.6824 2009-08-17 04:22 14.51 0.001 Cousins I CCD
3 DQ Her WDZ 2455060.6877 2009-08-17 04:30 14.83 0.002 Johnson V CCD
4 DQ Her WDZ 2455060.6931 2009-08-17 04:38 14.77 0.005 Johnson B CCD
5 DQ Her SRIC 2455060.7229 2009-08-17 05:20 15.794 0.015 Johnson V CCD
6 DQ Her PYG 2455061.4100 2009-08-17 21:50 14.5 N/A Visual Visual
7 DQ Her SRIC 2455061.6855 2009-08-18 04:27 14.698 0.008 Johnson V CCD
8 DQ Her SRIC 2455061.6866 2009-08-18 04:28 14.820 0.008 Johnson V CCD
9 DQ Her SRIC 2455061.6877 2009-08-18 04:30 14.914 0.009 Johnson V CCD
10 DQ Her SRIC 2455061.6888 2009-08-18 04:31 15.069 0.010 Johnson V CCD
11 DQ Her SRIC 2455061.6899 2009-08-18 04:33 15.287 0.011 Johnson V CCD
12 DQ Her SRIC 2455061.6910 2009-08-18 04:34 15.523 0.014 Johnson V CCD
13 DQ Her SRIC 2455061.6920 2009-08-18 04:36 15.836 0.017 Johnson V CCD
14 DQ Her SRIC 2455061.6931 2009-08-18 04:38 15.873 0.021 Johnson V CCD
15 DQ Her SRIC 2455061.6942 2009-08-18 04:39 16.231 0.026 Johnson V CCD
16 DQ Her SRIC 2455061.6953 2009-08-18 04:41 16.619 0.032 Johnson V CCD
17 DQ Her SRIC 2455061.6964 2009-08-18 04:42 16.618 0.036 Johnson V CCD
18 DQ Her SRIC 2455061.6975 2009-08-18 04:44 16.690 0.040 Johnson V CCD
19 DQ Her SRIC 2455061.6985 2009-08-18 04:45 16.697 0.036 Johnson V CCD
20 DQ Her SRIC 2455061.6996 2009-08-18 04:47 16.853 0.043 Johnson V CCD
21 DQ Her SRIC 2455061.7007 2009-08-18 04:49 16.416 0.044 Johnson V CCD
22 DQ Her SRIC 2455061.7018 2009-08-18 04:50 16.319 0.049 Johnson V CCD
23 DQ Her SRIC 2455061.7029 2009-08-18 04:52 16.176 0.039 Johnson V CCD
24 DQ Her SRIC 2455061.7039 2009-08-18 04:53 16.113 0.029 Johnson V CCD
25 DQ Her SRIC 2455061.7050 2009-08-18 04:55 15.841 0.024 Johnson V CCD