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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 5257 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 TW Cha MGW 2459393.8584 2021-06-28 08:36 11.434 0.005 Cousins I CCD
2 TW Cha MGW 2459393.8576 2021-06-28 08:34 12.341 0.003 Cousins R CCD
3 SZ Cha MGW 2459393.8576 2021-06-28 08:34 11.185 0.002 Cousins R CCD
4 SZ Cha MGW 2459393.8567 2021-06-28 08:33 12.105 0.004 Johnson V CCD
5 TW Cha MGW 2459393.8567 2021-06-28 08:33 13.317 0.005 Johnson V CCD
6 TW Cha MGW 2459393.8543 2021-06-28 08:30 14.404 0.004 Johnson B CCD
7 SZ Cha MGW 2459393.8543 2021-06-28 08:30 13.368 0.003 Johnson B CCD
8 T Cha MGW 2459393.8522 2021-06-28 08:27 9.368 0.004 Cousins I CCD
9 T Cha MGW 2459393.8518 2021-06-28 08:26 9.793 0.003 Cousins R CCD
10 T Cha MGW 2459393.8514 2021-06-28 08:26 10.298 0.004 Johnson V CCD
11 T Cha MGW 2459393.8509 2021-06-28 08:25 11.456 0.004 Johnson B CCD
12 IN Cha MGW 2459393.8498 2021-06-28 08:23 12.988 0.005 Cousins I CCD
13 IN Cha MGW 2459393.8471 2021-06-28 08:19 14.870 0.005 Cousins R CCD
14 IN Cha MGW 2459393.8434 2021-06-28 08:14 16.361 0.012 Johnson V CCD
15 IN Cha MGW 2459393.8396 2021-06-28 08:09 17.709 0.058 Johnson B CCD
16 RU Lup PLA 2459393.6042 2021-06-28 02:30 10.3 N/A Visual Visual
17 RU Lup HMB 2459393.5087 2021-06-28 00:12 10.388 0.007 Johnson V CCD
18 RU Lup HMB 2459393.5086 2021-06-28 00:12 10.406 0.007 Johnson V CCD
19 RU Lup HMB 2459393.5084 2021-06-28 00:12 9.265 0.010 Cousins I CCD
20 RU Lup HMB 2459393.5082 2021-06-28 00:11 9.284 0.009 Cousins I CCD
21 RU Lup HMB 2459393.5080 2021-06-28 00:11 9.924 0.006 Cousins R CCD
22 RU Lup HMB 2459393.5078 2021-06-28 00:11 9.922 0.006 Cousins R CCD
23 RU Lup HMB 2459393.5076 2021-06-28 00:10 10.810 0.008 Johnson B CCD
24 RU Lup HMB 2459393.5073 2021-06-28 00:10 10.830 0.008 Johnson B CCD
25 NSV 20520 HMB 2459393.5066 2021-06-28 00:09 15.352 0.042 Johnson B CCD