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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 7015 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 CH CYG PSD 2455989.0043 2012-03-02 12:06 7.121 0.002 Johnson V CCD
2 CH CYG PSD 2455989.0050 2012-03-02 12:07 7.107 0.002 Johnson V CCD
3 CH CYG PSD 2455989.0105 2012-03-02 12:15 8.760 0.006 Johnson B CCD
4 CH CYG PSD 2455989.0114 2012-03-02 12:16 8.744 0.006 Johnson B CCD
5 CH CYG JM 2455988.9615 2012-03-02 11:04 8.717 .02 Johnson B CCD
6 CH CYG JM 2455988.9733 2012-03-02 11:21 8.714 .02 Johnson B CCD
7 CH CYG JM 2455988.9853 2012-03-02 11:38 8.729 .02 Johnson B CCD
8 CH CYG JM 2455988.9972 2012-03-02 11:55 8.707 .02 Johnson B CCD
9 CH CYG JM 2455989.0090 2012-03-02 12:13 8.689 .02 Johnson B CCD
10 CH CYG JM 2455988.9627 2012-03-02 11:06 4.053 .02 Cousins I CCD
11 CH CYG JM 2455988.9745 2012-03-02 11:23 4.058 .02 Cousins I CCD
12 CH CYG JM 2455988.9864 2012-03-02 11:40 4.047 .02 Cousins I CCD
13 CH CYG JM 2455988.9984 2012-03-02 11:57 3.975 .02 Cousins I CCD
14 CH CYG JM 2455989.0103 2012-03-02 12:14 3.958 .02 Cousins I CCD
15 CH CYG JM 2455988.9623 2012-03-02 11:05 5.872 .02 Cousins R CCD
16 CH CYG JM 2455988.9741 2012-03-02 11:22 5.878 .02 Cousins R CCD
17 CH CYG JM 2455988.9860 2012-03-02 11:39 5.927 .02 Cousins R CCD
18 CH CYG JM 2455988.9980 2012-03-02 11:57 5.955 .02 Cousins R CCD
19 CH CYG JM 2455989.0098 2012-03-02 12:14 5.901 .02 Cousins R CCD
20 CH CYG JM 2455988.9619 2012-03-02 11:05 7.114 .02 Johnson V CCD
21 CH CYG JM 2455988.9737 2012-03-02 11:22 7.101 .02 Johnson V CCD
22 CH CYG JM 2455988.9856 2012-03-02 11:39 7.082 .02 Johnson V CCD
23 CH CYG JM 2455988.9975 2012-03-02 11:56 7.128 .02 Johnson V CCD
24 CH CYG JM 2455989.0094 2012-03-02 12:13 7.127 .02 Johnson V CCD
25 CH CYG SLH 2455988.9479 2012-03-02 10:45 7.5 N/A Visual Visual