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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.
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Enter a date in natural language, jd, or utc format.
Separate multiple observers with commas.
Campaign overrides targets and dates.

Found 34 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 HL Tau SDM 2458433.5660 2018-11-11 01:35 16.008 0.058 Johnson B CCD
2 HL Tau SDM 2458433.5625 2018-11-11 01:29 14.814 0.054 Johnson V CCD
3 HL Tau PALE 2458433.7531 2018-11-11 06:04 13.678 0.051 Cousins R CCD
4 HL Tau PALE 2458433.7495 2018-11-11 05:59 14.703 0.023 Johnson V CCD
5 HL Tau PALE 2458433.7459 2018-11-11 05:54 16.108 0.071 Johnson B CCD
6 HL Tau DEY 2458433.5909 2018-11-11 02:10 14.779 0.008 Johnson V CCD
7 HL Tau DEY 2458433.5944 2018-11-11 02:15 16.170 0.029 Johnson B CCD
8 HL Tau DEY 2458433.5887 2018-11-11 02:07 13.704 0.006 Cousins R CCD
9 HL Tau DEY 2458433.5877 2018-11-11 02:06 12.679 0.014 Cousins I CCD
10 HL Tau DEY 2458433.6394 2018-11-11 03:20 12.646 0.007 Cousins I CCD
11 HL Tau FJAA 2458434.4485 2018-11-11 22:45 14.934 0.078 Johnson V CCD
12 HL Tau YBA 2458434.2552 2018-11-11 18:07 16.147 0.119 Johnson B CCD
13 HL Tau YBA 2458434.2599 2018-11-11 18:14 12.703 0.063 Cousins I CCD
14 HL Tau YBA 2458434.2583 2018-11-11 18:11 13.735 0.028 Cousins R CCD
15 HL Tau YBA 2458434.2568 2018-11-11 18:09 14.689 0.015 Johnson V CCD
16 XZ Tau SDM 2458433.5660 2018-11-11 01:35 13.829 0.047 Johnson B CCD
17 XZ Tau SDM 2458433.5625 2018-11-11 01:29 12.861 0.042 Johnson V CCD
18 XZ Tau PALE 2458433.7531 2018-11-11 06:04 11.915 0.050 Cousins R CCD
19 XZ Tau PALE 2458433.7495 2018-11-11 05:59 12.931 0.008 Johnson V CCD
20 XZ Tau PALE 2458433.7459 2018-11-11 05:54 13.904 0.010 Johnson B CCD
21 XZ Tau DEY 2458433.5909 2018-11-11 02:10 12.872 0.002 Johnson V CCD
22 XZ Tau DEY 2458433.5944 2018-11-11 02:15 13.826 0.004 Johnson B CCD
23 XZ Tau DEY 2458433.5887 2018-11-11 02:07 11.773 0.002 Cousins R CCD
24 XZ Tau DEY 2458433.5877 2018-11-11 02:06 10.513 0.005 Cousins I CCD
25 XZ Tau DEY 2458433.6394 2018-11-11 03:20 10.515 0.003 Cousins I CCD