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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 GKI 2459512.3097 2021-10-24 19:25 13.2 0.1 Johnson U DSLR
2 GK Per DUBF 2459512.3038 2021-10-24 19:17 12.840 0.020 Johnson V CCD
3 GK Per TOO 2459512.2690 2021-10-24 18:27 13.1 N/A Visual Visual
4 GK Per EBAA 2459512.2549 2021-10-24 18:06 13.0 N/A Visual Visual
5 GK Per RRIA 2459511.6183 2021-10-24 02:50 11.670 0.112 Cousins I CCD
6 GK Per RRIA 2459511.6172 2021-10-24 02:48 12.861 0.064 Johnson V CCD
7 GK Per RRIA 2459511.6172 2021-10-24 02:48 12.798 0.059 Johnson V CCD
8 GK Per RRIA 2459511.6163 2021-10-24 02:47 13.717 0.067 Johnson B CCD
9 GK Per MUY 2459511.4208 2021-10-23 22:05 12.9 N/A Visual Visual
10 GK Per EBAA 2459511.2625 2021-10-23 18:18 13.0 N/A Visual Visual
11 GK Per DUBF 2459511.2529 2021-10-23 18:04 12.813 0.025 Johnson V CCD
12 GK Per DUBF 2459511.2514 2021-10-23 18:02 12.819 0.027 Johnson V CCD
13 GK Per PYG 2459510.5760 2021-10-23 01:49 12.9 N/A Visual Visual
14 GK Per CIVA 2459510.4880 2021-10-22 23:42 14.152 0.372 Johnson B CCD
15 GK Per CIVA 2459510.4872 2021-10-22 23:41 13.129 0.114 Johnson V CCD
16 GK Per CIVA 2459510.4858 2021-10-22 23:39 11.400 0.146 Cousins I CCD
17 GK Per GZN 2459510.3590 2021-10-22 20:36 12.9 N/A Visual Visual
18 GK Per MED 2459509.4792 2021-10-21 23:30 <11.0 N/A Visual Visual
19 GK Per DUBF 2459509.2689 2021-10-21 18:27 12.751 0.029 Johnson V CCD
20 GK Per DUBF 2459509.2674 2021-10-21 18:25 12.759 0.026 Johnson V CCD
21 GK Per RFDA 2459508.5513 2021-10-21 01:13 13.921 0.026 Johnson B CCD
22 GK Per RFDA 2459508.5503 2021-10-21 01:12 13.029 0.007 Johnson V CCD
23 GK Per RFDA 2459508.5494 2021-10-21 01:11 11.558 0.009 Cousins I CCD
24 GK Per RFDA 2459508.5486 2021-10-21 01:09 12.245 0.003 Cousins R CCD
25 GK Per RFDA 2459508.5478 2021-10-21 01:08 13.812 0.027 Johnson B CCD