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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 9318 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 GK Per CIVA 2459504.5023 2021-10-17 00:03 12.924 0.016 Johnson V CCD
2 GK Per CIVA 2459504.5011 2021-10-17 00:01 11.457 0.148 Cousins I CCD
3 GK Per CIVA 2459504.4982 2021-10-16 23:57 13.047 0.113 Johnson V CCD
4 GK Per CIVA 2459504.4943 2021-10-16 23:51 12.899 0.014 Johnson V CCD
5 GK Per CIVA 2459504.4880 2021-10-16 23:42 12.974 0.014 Johnson V CCD
6 GK Per CIVA 2459504.4816 2021-10-16 23:33 12.930 0.014 Johnson V CCD
7 GK Per CIVA 2459504.4751 2021-10-16 23:24 12.968 0.013 Johnson V CCD
8 GK Per CIVA 2459504.4685 2021-10-16 23:14 12.973 0.013 Johnson V CCD
9 GK Per CIVA 2459504.4623 2021-10-16 23:05 12.978 0.013 Johnson V CCD
10 GK Per TOO 2459504.3970 2021-10-16 21:31 13.0 N/A Visual Visual
11 GK Per RFDA 2459503.6341 2021-10-16 03:13 13.541 0.025 Johnson B CCD
12 GK Per RFDA 2459503.6332 2021-10-16 03:11 12.754 0.007 Johnson V CCD
13 GK Per RFDA 2459503.6322 2021-10-16 03:10 11.380 0.007 Cousins I CCD
14 GK Per RFDA 2459503.6314 2021-10-16 03:09 12.025 0.003 Cousins R CCD
15 GK Per RFDA 2459503.6306 2021-10-16 03:08 13.612 0.020 Johnson B CCD
16 GK Per RFDA 2459503.6297 2021-10-16 03:06 12.736 0.004 Johnson V CCD
17 GK Per RFDA 2459503.6287 2021-10-16 03:05 11.332 0.006 Cousins I CCD
18 GK Per RFDA 2459503.6279 2021-10-16 03:04 11.968 0.003 Cousins R CCD
19 GK Per RFDA 2459503.6271 2021-10-16 03:03 13.438 0.013 Johnson B CCD
20 GK Per RFDA 2459503.6261 2021-10-16 03:01 12.675 0.003 Johnson V CCD
21 GK Per MUY 2459503.3868 2021-10-15 21:16 12.8 N/A Visual Visual
22 GK Per AMID 2459503.3517 2021-10-15 20:26 12.399 0.085 Johnson V CCD
23 GK Per EBAA 2459503.3042 2021-10-15 19:18 13.0 N/A Visual Visual
24 GK Per DUBF 2459503.2781 2021-10-15 18:40 12.684 0.022 Johnson V CCD
25 GK Per DUBF 2459503.2767 2021-10-15 18:38 12.680 0.022 Johnson V CCD