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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 732 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 TW Hya RMAF 2459308.9872 2021-04-04 11:41 9.532 0.002 Cousins I CCD
2 TW Hya RMAF 2459308.9853 2021-04-04 11:38 10.396 0.001 Cousins R CCD
3 TW Hya RMAF 2459308.9835 2021-04-04 11:36 11.150 0.002 Johnson V CCD
4 TW Hya RMAF 2459308.9816 2021-04-04 11:33 12.276 0.003 Johnson B CCD
5 TW Hya PJAD 2459308.9125 2021-04-04 09:54 10.269 0.001 Cousins R CCD
6 TW Hya PJAD 2459308.9111 2021-04-04 09:51 11.134 0.002 Johnson V CCD
7 TW Hya PJAD 2459308.9093 2021-04-04 09:49 12.224 0.002 Johnson B CCD
8 TW Hya HMB 2459308.5988 2021-04-04 02:22 10.278 0.008 Cousins R CCD
9 TW Hya HMB 2459308.5986 2021-04-04 02:21 10.269 0.007 Cousins R CCD
10 TW Hya HMB 2459308.5982 2021-04-04 02:21 12.031 0.013 Johnson B CCD
11 TW Hya HMB 2459308.5978 2021-04-04 02:20 11.997 0.012 Johnson B CCD
12 TW Hya HMB 2459308.5975 2021-04-04 02:20 11.095 0.007 Johnson V CCD
13 TW Hya HMB 2459308.5972 2021-04-04 02:19 11.089 0.007 Johnson V CCD
14 TW Hya HMB 2459308.5970 2021-04-04 02:19 9.509 0.019 Cousins I CCD
15 TW Hya HMB 2459308.5968 2021-04-04 02:19 9.487 0.021 Cousins I CCD
16 TW Hya MLF 2459308.4300 2021-04-03 22:19 9.25 0.02 Cousins I CCD
17 TW Hya MLF 2459308.4300 2021-04-03 22:19 10.05 0.02 Cousins R CCD
18 TW Hya MLF 2459308.4300 2021-04-03 22:19 10.91 0.02 Johnson V CCD
19 TW Hya MLF 2459308.4300 2021-04-03 22:19 11.76 0.04 Johnson B CCD
20 TW Hya OAAA 2459308.3826 2021-04-03 21:10 9.816 0.018 Cousins R CCD
21 TW Hya OAAA 2459308.3826 2021-04-03 21:10 10.664 0.013 Johnson V CCD
22 TW Hya OAAA 2459308.3826 2021-04-03 21:10 11.870 0.021 Johnson B CCD
23 TW Hya TYS 2459307.7229 2021-04-03 05:20 10.836 0.035 TG CCD
24 TW Hya DKS 2459307.6454 2021-04-03 03:29 11.826 0.021 Johnson B CCD
25 TW Hya DKS 2459307.6425 2021-04-03 03:25 9.399 0.009 Cousins I CCD