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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.

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Found 7786 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 CH UMa BVS 2459520.8238 2021-11-02 07:46 14.811 0.1 Johnson V CCD
2 CH UMA DFS 2459522.6935 2021-11-04 04:38 14.985 0.087 Johnson V CCD
3 CH UMA PDM 2459522.7530 2021-11-04 06:04 14.8046 0.0640 Johnson V CCD
4 CH UMa PYG 2459522.6830 2021-11-04 04:23 14.977 N/A Unfiltered with V Zeropoint CCD
5 CH UMA HDF 2459522.9006 2021-11-04 09:36 14.840 0.052 Johnson V CCD
6 CH UMa BVS 2459522.8501 2021-11-04 08:24 14.92 0.1 Johnson V CCD
7 CH UMA HDF 2459522.9044 2021-11-04 09:42 14.781 0.036 Johnson V CCD
8 CH UMA HDF 2459522.9117 2021-11-04 09:52 14.841 0.049 Johnson V CCD
9 CH UMA HDF 2459522.9081 2021-11-04 09:47 14.828 0.045 Johnson V CCD
10 CH UMA DFS 2459523.6508 2021-11-05 03:37 14.682 0.022 Johnson V CCD
11 CH UMA HDF 2459523.9626 2021-11-05 11:06 14.789 0.020 Johnson V CCD
12 CH UMA DFS 2459524.6508 2021-11-06 03:37 14.943 0.023 Johnson V CCD
13 CH UMA HDF 2459524.9618 2021-11-06 11:05 14.719 0.014 Johnson V CCD
14 CH UMA DFS 2459525.6575 2021-11-07 03:46 14.716 0.018 Johnson V CCD
15 CH UMA DFS 2459526.6623 2021-11-08 03:53 14.711 0.019 Johnson V CCD
16 CH UMA HDF 2459526.9616 2021-11-08 11:04 14.548 0.047 Johnson V CCD
17 CH UMA DFS 2459527.6623 2021-11-09 03:53 14.128 0.012 Johnson V CCD
18 CH UMA HDF 2459527.9207 2021-11-09 10:05 13.794 0.008 Johnson V CCD
19 CH UMA PDM 2459526.7542 2021-11-08 06:06 14.6686 0.0424 Johnson V CCD
20 CH UMA PDM 2459527.7396 2021-11-09 05:45 13.9157 0.0059 Johnson V CCD
21 CH UMA PDM 2459527.7463 2021-11-09 05:54 13.9071 0.0082 Johnson V CCD
22 CH UMA PDM 2459527.7435 2021-11-09 05:50 13.9251 0.0043 Johnson V CCD
23 CH UMA PDM 2459527.7491 2021-11-09 05:58 13.8832 0.0066 Johnson V CCD
24 CH UMA DFS 2459528.6617 2021-11-10 03:52 13.734 0.008 Johnson V CCD
25 CH UMA PYG 2459528.6940 2021-11-10 04:39 13.718 N/A Unfiltered with V Zeropoint CCD