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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 331 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 SN 2013dy HFF 2456489.6944 2013-07-16 04:39 14.4 N/A Visual Visual
2 SN 2013dy WKL 2456489.4653 2013-07-15 23:10 14.5 N/A Visual Visual
3 SN 2013dy WKL 2456490.4375 2013-07-16 22:30 13.9 N/A Visual Visual
4 SN 2013dy WKL 2456492.4132 2013-07-18 21:54 13.5 N/A Visual Visual
5 SN 2013dy VSD 2456493.4222 2013-07-19 22:08 13.3 N/A Visual Visual
6 SN 2013dy HSW 2456492.6216 2013-07-19 02:55 13.54 0.03 Unfiltered with V Zeropoint CCD
7 SN 2013dy HSW 2456491.5464 2013-07-18 01:06 13.73 0.02 Unfiltered with V Zeropoint CCD
8 SN 2013dy HSW 2456489.5929 2013-07-16 02:13 14.25 0.02 Unfiltered with V Zeropoint CCD
9 SN 2013dy HSW 2456486.6023 2013-07-13 02:27 15.49 0.03 Unfiltered with V Zeropoint CCD
10 SN 2013dy HSW 2456484.6187 2013-07-11 02:50 16.67 0.02 Unfiltered with V Zeropoint CCD
11 SN 2013dy SRIC 2456493.9237 2013-07-20 10:10 13.110 0.033 Cousins R CCD
12 SN 2013dy SRIC 2456493.9264 2013-07-20 10:14 12.998 0.033 Cousins I CCD
13 SN 2013dy SRIC 2456493.9141 2013-07-20 09:56 13.579 0.011 Johnson B CCD
14 SN 2013dy SRIC 2456493.9198 2013-07-20 10:04 13.351 0.014 Johnson V CCD
15 SN 2013dy WKL 2456494.3958 2013-07-20 21:29 13.0 N/A Visual Visual
16 SN 2013dy HGUA 2456494.4285 2013-07-20 22:17 13.1 N/A Visual Visual
17 SN 2013dy HSW 2456494.4911 2013-07-20 23:47 13.30 0.02 Unfiltered with V Zeropoint CCD
18 SN 2013dy HSW 2456493.5569 2013-07-20 01:21 13.37 0.02 Unfiltered with V Zeropoint CCD
19 SN 2013dy HSW 2456494.4972 2013-07-20 23:55 13.30 0.02 Johnson V CCD
20 SN 2013dy CMJA 2456494.7445 2013-07-21 05:52 13.219 0.006 Johnson V CCD
21 SN 2013dy CMJA 2456494.7525 2013-07-21 06:03 12.901 0.008 Cousins I CCD
22 SN 2013dy BBI 2456494.4319 2013-07-20 22:21 13.2 N/A Visual Visual
23 SN 2013dy SRIC 2456494.9213 2013-07-21 10:06 13.010 0.033 Cousins R CCD
24 SN 2013dy SRIC 2456494.9241 2013-07-21 10:10 12.925 0.038 Cousins I CCD
25 SN 2013dy SRIC 2456494.9115 2013-07-21 09:52 13.460 0.014 Johnson B CCD