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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 JM 2456046.8338 2012-04-29 08:00 5.671 .02 Cousins R CCD
2 CH Cyg SGOR 2456046.8337 2012-04-29 08:00 7.496 0.005 Johnson V CCD
3 CH Cyg JM 2456046.8336 2012-04-29 08:00 7.509 .02 Johnson V CCD
4 CH Cyg JM 2456046.8333 2012-04-29 07:59 8.957 .02 Johnson B CCD
5 CH Cyg SGOR 2456046.8331 2012-04-29 07:59 8.987 0.006 Johnson B CCD
6 CH Cyg SGOR 2456046.8328 2012-04-29 07:59 7.520 0.005 Johnson V CCD
7 CH Cyg SGOR 2456046.8322 2012-04-29 07:58 9.015 0.006 Johnson B CCD
8 CH Cyg SGOR 2456046.8318 2012-04-29 07:57 7.520 0.005 Johnson V CCD
9 CH Cyg SGOR 2456046.8312 2012-04-29 07:56 8.979 0.006 Johnson B CCD
10 CH Cyg SGOR 2456046.8309 2012-04-29 07:56 7.533 0.005 Johnson V CCD
11 CH Cyg SGOR 2456046.8303 2012-04-29 07:55 9.009 0.006 Johnson B CCD
12 CH Cyg SGOR 2456046.8299 2012-04-29 07:55 7.508 0.005 Johnson V CCD
13 CH Cyg SGOR 2456046.8294 2012-04-29 07:54 8.991 0.006 Johnson B CCD
14 CH Cyg SGOR 2456046.8290 2012-04-29 07:53 7.506 0.005 Johnson V CCD
15 CH Cyg SGOR 2456046.8284 2012-04-29 07:52 9.024 0.006 Johnson B CCD
16 CH Cyg SGOR 2456046.8281 2012-04-29 07:52 7.486 0.005 Johnson V CCD
17 CH Cyg SGOR 2456046.8275 2012-04-29 07:51 9.010 0.006 Johnson B CCD
18 CH Cyg SGOR 2456046.8271 2012-04-29 07:51 7.550 0.005 Johnson V CCD
19 CH Cyg SGOR 2456046.8266 2012-04-29 07:50 8.963 0.006 Johnson B CCD
20 CH Cyg SGOR 2456046.8262 2012-04-29 07:49 7.472 0.005 Johnson V CCD
21 CH Cyg SGOR 2456046.8257 2012-04-29 07:48 8.988 0.006 Johnson B CCD
22 CH Cyg SGOR 2456046.8253 2012-04-29 07:48 7.494 0.005 Johnson V CCD
23 CH Cyg SGOR 2456046.8248 2012-04-29 07:47 9.003 0.007 Johnson B CCD
24 CH Cyg SGOR 2456046.8244 2012-04-29 07:47 7.504 0.005 Johnson V CCD
25 CH Cyg SGOR 2456046.8238 2012-04-29 07:46 8.980 0.007 Johnson B CCD