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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 JML 2459502.3854 2021-10-14 21:14 12.9 N/A Visual Visual
2 GK Per TIA 2459502.3639 2021-10-14 20:44 12.95 0.01 Johnson V CCD
3 GK Per WKL 2459502.3611 2021-10-14 20:39 12.9 N/A Visual Visual
4 GK Per NDQ 2459502.3153 2021-10-14 19:34 12.9 N/A Visual Visual
5 GK Per EBAA 2459502.3056 2021-10-14 19:20 13.0 N/A Visual Visual
6 GK Per GZN 2459501.4604 2021-10-13 23:02 12.9 N/A Visual Visual
7 GK Per NDQ 2459501.3153 2021-10-13 19:34 12.9 N/A Visual Visual
8 GK Per DUBF 2459501.2891 2021-10-13 18:56 12.804 0.019 Johnson V CCD
9 GK Per DUBF 2459501.2877 2021-10-13 18:54 12.825 0.020 Johnson V CCD
10 GK Per RFDA 2459500.5350 2021-10-13 00:50 13.937 0.024 Johnson B CCD
11 GK Per RFDA 2459500.5340 2021-10-13 00:48 13.022 0.006 Johnson V CCD
12 GK Per RFDA 2459500.5331 2021-10-13 00:47 11.584 0.010 Cousins I CCD
13 GK Per RFDA 2459500.5323 2021-10-13 00:46 12.282 0.006 Cousins R CCD
14 GK Per RFDA 2459500.5314 2021-10-13 00:45 13.883 0.023 Johnson B CCD
15 GK Per RFDA 2459500.5305 2021-10-13 00:43 13.035 0.009 Johnson V CCD
16 GK Per RFDA 2459500.5295 2021-10-13 00:42 11.597 0.010 Cousins I CCD
17 GK Per RFDA 2459500.5288 2021-10-13 00:41 12.276 0.004 Cousins R CCD
18 GK Per RFDA 2459500.5279 2021-10-13 00:40 13.893 0.027 Johnson B CCD
19 GK Per RFDA 2459500.5270 2021-10-13 00:38 13.035 0.008 Johnson V CCD
20 GK Per GZN 2459500.4646 2021-10-12 23:09 12.9 N/A Visual Visual
21 GK Per MED 2459500.4306 2021-10-12 22:20 <11.5 N/A Visual Visual
22 GK Per WKL 2459500.4299 2021-10-12 22:18 12.85 N/A CV CCD
23 GK Per OJR 2459500.4111 2021-10-12 21:51 13.0 N/A Visual Visual
24 GK Per MUY 2459500.3924 2021-10-12 21:25 12.9 N/A Visual Visual
25 GK Per DUBF 2459500.3212 2021-10-12 19:42 12.897 0.017 Johnson V CCD