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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 666 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 TT Ari MMI 2448287.3640 1991-01-30 20:44 10.8 N/A Visual Visual
2 AR And MMI 2448287.3630 1991-01-30 20:42 <11.4 N/A Visual Visual
3 KT Per MMI 2448287.3620 1991-01-30 20:41 <11.6 N/A Visual Visual
4 RX And MMI 2448287.3610 1991-01-30 20:39 11.6 N/A Visual Visual
5 HT Cas SPK 2448287.3600 1991-01-30 20:38 <12.7 N/A Visual Visual
6 TT Ari SPK 2448287.3400 1991-01-30 20:09 10.7 N/A Visual Visual
7 HT Cas SPK 2448287.3300 1991-01-30 19:55 <13.0 N/A Visual Visual
8 Z Cha JA 2448286.8900 1991-01-30 09:21 <12.6 N/A Visual Visual
9 AR And YRK 2448286.6210 1991-01-30 02:54 <12.9 N/A Visual Visual
10 KT Per YRK 2448286.6190 1991-01-30 02:51 <13.2 N/A Visual Visual
11 TY Psc YRK 2448286.6170 1991-01-30 02:48 <13.5 N/A Visual Visual
12 TT Ari YRK 2448286.6150 1991-01-30 02:45 10.6 N/A Visual Visual
13 RX And YRK 2448286.6130 1991-01-30 02:42 11.6 N/A Visual Visual
14 TT Ari STI 2448286.6000 1991-01-30 02:24 10.5 N/A Visual Visual
15 HT Cas SPK 2448286.4000 1991-01-29 21:35 <13.0 N/A Visual Visual
16 HT Cas SPK 2448286.3500 1991-01-29 20:24 <13.0 N/A Visual Visual
17 RX And SPK 2448286.3400 1991-01-29 20:09 11.4 N/A Visual Visual
18 TT Ari SPK 2448286.2900 1991-01-29 18:57 10.7 N/A Visual Visual
19 TT Ari GZN 2448286.2500 1991-01-29 18:00 10.9 N/A Visual Visual
20 TT Ari VED 2448286.2500 1991-01-29 18:00 10.6 N/A Visual Visual
21 RX And VED 2448286.2500 1991-01-29 18:00 11.4 N/A Visual Visual
22 Z Cha GPX 2448285.9600 1991-01-29 11:02 <13.7 N/A Visual Visual
23 OY Car GPX 2448285.9600 1991-01-29 11:02 <14.1 N/A Visual Visual
24 TT Ari CR 2448285.9000 1991-01-29 09:35 10.9 N/A Visual Visual
25 AR And YRK 2448285.6280 1991-01-29 03:04 <13.4 N/A Visual Visual