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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 DKS 2459307.6403 2021-04-03 03:21 10.888 0.013 Johnson V CCD
2 TW Hya HMB 2459307.6015 2021-04-03 02:26 10.139 0.005 Cousins R CCD
3 TW Hya HMB 2459307.6013 2021-04-03 02:25 10.142 0.005 Cousins R CCD
4 TW Hya HMB 2459307.6010 2021-04-03 02:25 11.720 0.007 Johnson B CCD
5 TW Hya HMB 2459307.6006 2021-04-03 02:24 11.735 0.007 Johnson B CCD
6 TW Hya HMB 2459307.6002 2021-04-03 02:24 10.915 0.005 Johnson V CCD
7 TW Hya HMB 2459307.6000 2021-04-03 02:23 10.917 0.005 Johnson V CCD
8 TW Hya HMB 2459307.5997 2021-04-03 02:23 9.444 0.015 Cousins I CCD
9 TW Hya HMB 2459307.5995 2021-04-03 02:23 9.419 0.015 Cousins I CCD
10 TW Hya MGW 2459306.8753 2021-04-02 09:00 9.513 0.005 Cousins I CCD
11 TW Hya MGW 2459306.8751 2021-04-02 09:00 9.508 0.005 Cousins I CCD
12 TW Hya MGW 2459306.8747 2021-04-02 08:59 10.250 0.004 Cousins R CCD
13 TW Hya MGW 2459306.8745 2021-04-02 08:59 10.241 0.004 Cousins R CCD
14 TW Hya MGW 2459306.8740 2021-04-02 08:58 11.196 0.003 Johnson V CCD
15 TW Hya MGW 2459306.8736 2021-04-02 08:58 11.186 0.003 Johnson V CCD
16 TW Hya MGW 2459306.8729 2021-04-02 08:56 12.313 0.004 Johnson B CCD
17 TW Hya MGW 2459306.8722 2021-04-02 08:55 12.310 0.004 Johnson B CCD
18 TW Hya DKS 2459306.6340 2021-04-02 03:12 12.244 0.008 Johnson B CCD
19 TW Hya DKS 2459306.6310 2021-04-02 03:08 9.507 0.009 Cousins I CCD
20 TW Hya DKS 2459306.6290 2021-04-02 03:05 11.136 0.007 Johnson V CCD
21 TW Hya HMB 2459306.6043 2021-04-02 02:30 10.309 0.005 Cousins R CCD
22 TW Hya HMB 2459306.6041 2021-04-02 02:29 10.321 0.006 Cousins R CCD
23 TW Hya HMB 2459306.6038 2021-04-02 02:29 12.200 0.008 Johnson B CCD
24 TW Hya HMB 2459306.6034 2021-04-02 02:28 12.220 0.009 Johnson B CCD
25 TW Hya HMB 2459306.6030 2021-04-02 02:28 11.205 0.006 Johnson V CCD