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Search Data

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.

Note: Search parameters have been overridden by the selected campaign: Spectroscopy requested for the Be star BU Tau = Pleione.

Target(s)

Enter list of star names, comma separated.

Start Date

Enter a date in natural language, jd, or utc format.

End Date

Enter a date in natural language, jd, or utc format.

Filters

Observation Types

Observer

Separate multiple observers with commas.

Campaign

Campaign overrides targets and dates.

Found 614 records

#	Target	Observer	Julian Date	UTC Date	Magnitude	Uncertainty	Band	Type
1	BU Tau	EJDB	2461251.9384	2026-07-30 10:31	5.016	0.009	TG	DSLR
2	BU Tau	CKB	2461248.9458	2026-07-27 10:41	5.3	N/A	Visual	Visual
3	BU Tau	CKB	2461241.9479	2026-07-20 10:45	5.2	N/A	Visual	Visual
4	BU Tau	CKB	2461231.9201	2026-07-10 10:05	5.2	N/A	Visual	Visual
5	BU Tau	CKB	2461225.9403	2026-07-04 10:34	5.2	N/A	Visual	Visual
6	BU Tau	CKB	2461218.9299	2026-06-27 10:18	5.2	N/A	Visual	Visual
7	BU Tau	VOL	2461155.3056	2026-04-24 19:20	4.996	0.030	Johnson V	DSLR
8	BU Tau	VOL	2461155.3043	2026-04-24 19:18	5.005	0.033	Johnson V	DSLR
9	BU Tau	VOL	2461155.3033	2026-04-24 19:16	4.988	0.034	Johnson V	DSLR
10	BU Tau	VOL	2461154.3161	2026-04-23 19:35	4.965	0.038	Johnson V	DSLR
11	BU Tau	VOL	2461154.3143	2026-04-23 19:32	4.937	0.025	Johnson V	DSLR
12	BU Tau	VOL	2461154.3122	2026-04-23 19:29	4.988	0.018	Johnson V	DSLR
13	BU Tau	VOL	2461153.2990	2026-04-22 19:10	5.029	0.038	Johnson V	DSLR
14	BU Tau	BGZ	2461149.5688	2026-04-19 01:39	5.3	N/A	Visual	Visual
15	BU Tau	CKB	2461147.5660	2026-04-17 01:34	5.2	N/A	Visual	Visual
16	BU Tau	VOL	2461147.3206	2026-04-16 19:41	4.990	0.028	Johnson V	DSLR
17	BU Tau	CME	2461140.3021	2026-04-09 19:15	5.3	N/A	Visual	Visual
18	BU Tau	BHA	2461140.2920	2026-04-09 19:00	5.0	N/A	Visual	Visual
19	BU Tau	BHA	2461139.2920	2026-04-08 19:00	5.0	N/A	Visual	Visual
20	BU Tau	VOL	2461138.3059	2026-04-07 19:20	4.960	0.009	Johnson V	DSLR
21	BU Tau	BHA	2461138.2920	2026-04-07 19:00	4.9	N/A	Visual	Visual
22	BU Tau	CKB	2461137.5576	2026-04-07 01:23	5.2	N/A	Visual	Visual
23	BU Tau	CME	2461137.3090	2026-04-06 19:24	5.3	N/A	Visual	Visual
24	BU Tau	BHA	2461137.2920	2026-04-06 19:00	5.0	N/A	Visual	Visual
25	BU Tau	VOL	2461137.2853	2026-04-06 18:50	4.994	0.019	Johnson V	DSLR