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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 2434 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 RY TAU PIV 2460271.4148 2023-11-22 21:57 9.1149 0.0031 Johnson V CCD
2 RY TAU PIV 2460271.4170 2023-11-22 22:00 9.1128 0.0030 Johnson V CCD
3 RY TAU PIV 2460271.4192 2023-11-22 22:03 9.1137 0.0029 Johnson V CCD
4 RY TAU PIV 2460271.4214 2023-11-22 22:06 9.1062 0.0023 Johnson V CCD
5 RY TAU PIV 2460271.4236 2023-11-22 22:10 9.1249 0.0024 Johnson V CCD
6 RY TAU PIV 2460271.4259 2023-11-22 22:13 9.1145 0.0024 Johnson V CCD
7 RY TAU PIV 2460271.4300 2023-11-22 22:19 9.1313 0.0023 Johnson V CCD
8 RY TAU PIV 2460271.4322 2023-11-22 22:22 9.1489 0.0023 Johnson V CCD
9 RY TAU PIV 2460271.4344 2023-11-22 22:25 9.1430 0.0023 Johnson V CCD
10 RY TAU PIV 2460271.4366 2023-11-22 22:28 9.1353 0.0023 Johnson V CCD
11 RY TAU PIV 2460271.4388 2023-11-22 22:31 9.1539 0.0025 Johnson V CCD
12 RY TAU PIV 2460271.4410 2023-11-22 22:35 9.1240 0.0023 Johnson V CCD
13 RY TAU PIV 2460271.4153 2023-11-22 21:58 8.4658 0.0021 Cousins R CCD
14 RY TAU PIV 2460271.4176 2023-11-22 22:01 8.4643 0.0020 Cousins R CCD
15 RY TAU PIV 2460271.4198 2023-11-22 22:04 8.4570 0.0019 Cousins R CCD
16 RY TAU PIV 2460271.4220 2023-11-22 22:07 8.4468 0.0017 Cousins R CCD
17 RY TAU PIV 2460271.4242 2023-11-22 22:10 8.4529 0.0017 Cousins R CCD
18 RY TAU PIV 2460271.4264 2023-11-22 22:14 8.4614 0.0017 Cousins R CCD
19 RY TAU PIV 2460271.4305 2023-11-22 22:19 8.4679 0.0017 Cousins R CCD
20 RY TAU PIV 2460271.4349 2023-11-22 22:26 8.4723 0.0017 Cousins R CCD
21 RY TAU PIV 2460271.4371 2023-11-22 22:29 8.4427 0.0017 Cousins R CCD
22 RY TAU PIV 2460271.4394 2023-11-22 22:32 8.4375 0.0018 Cousins R CCD
23 RY TAU PIV 2460271.4416 2023-11-22 22:35 8.4611 0.0017 Cousins R CCD
24 RY TAU PIV 2460271.4159 2023-11-22 21:58 7.8468 0.0021 Cousins I CCD
25 RY TAU PIV 2460271.4181 2023-11-22 22:02 7.8501 0.0021 Cousins I CCD