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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 523 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 HL Tau VMT 2458426.4318 2018-11-03 22:21 14.727 0.116 Johnson V CCD
2 XZ Tau VMT 2458425.4141 2018-11-02 21:56 13.140 0.049 Johnson V CCD
3 XZ Tau VMT 2458425.4136 2018-11-02 21:55 13.166 0.045 Johnson V CCD
4 XZ Tau VMT 2458425.4126 2018-11-02 21:54 14.043 0.038 Johnson B CCD
5 HL Tau VMT 2458425.4126 2018-11-02 21:54 15.788 0.094 Johnson B CCD
6 HL Tau VMT 2458425.4117 2018-11-02 21:52 15.960 0.094 Johnson B CCD
7 XZ Tau VMT 2458425.4117 2018-11-02 21:52 14.131 0.037 Johnson B CCD
8 HL Tau VMT 2458425.4107 2018-11-02 21:51 14.660 0.073 Johnson V CCD
9 HL Tau VMT 2458425.4095 2018-11-02 21:49 14.559 0.073 Johnson V CCD
10 XZ Tau KWIA 2458424.7541 2018-11-02 06:05 12.855 0.061 Johnson V CCD
11 HL Tau KWIA 2458424.7541 2018-11-02 06:05 14.605 0.048 Johnson V CCD
12 XZ Tau VMT 2458424.4125 2018-11-01 21:53 12.965 0.100 Johnson V CCD
13 XZ Tau VMT 2458424.4115 2018-11-01 21:52 13.993 0.052 Johnson B CCD
14 HL Tau VMT 2458424.4115 2018-11-01 21:52 16.088 0.147 Johnson B CCD
15 HL Tau VMT 2458424.4106 2018-11-01 21:51 15.862 0.126 Johnson B CCD
16 XZ Tau VMT 2458424.4106 2018-11-01 21:51 13.937 0.055 Johnson B CCD
17 HL Tau HBB 2458423.8838 2018-11-01 09:12 14.627 0.009 Johnson V CCD
18 XZ Tau HBB 2458423.8838 2018-11-01 09:12 12.886 0.008 Johnson V CCD
19 XZ Tau DEY 2458423.6247 2018-11-01 02:59 13.860 0.037 Johnson B CCD
20 XZ Tau DEY 2458423.6212 2018-11-01 02:54 12.915 0.014 Johnson V CCD
21 HL Tau DEY 2458423.6212 2018-11-01 02:54 14.557 0.060 Johnson V CCD
22 HL Tau VMT 2458423.5004 2018-11-01 00:00 14.598 0.166 Johnson V CCD
23 XZ Tau VMAG 2458423.4332 2018-10-31 22:23 13.995 0.03 Johnson B CCD
24 XZ Tau VMAG 2458423.4319 2018-10-31 22:21 13.029 0.02 Johnson V CCD
25 XZ Tau VMAG 2458423.4262 2018-10-31 22:13 11.927 0.02 Cousins R CCD