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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 306296 records

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# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 T CAS MOW 2458940.5000 2020-04-01 00:00 10.1 N/A Visual Visual
2 T ARI MOW 2458940.5000 2020-04-01 00:00 8.7 N/A Visual Visual
3 X CET MOW 2458940.5000 2020-04-01 00:00 9.3 N/A Visual Visual
4 R LEP MOW 2458940.5000 2020-04-01 00:00 9.4 N/A Visual Visual
5 ALF ORI MOW 2458940.5000 2020-04-01 00:00 1.1 N/A Visual Visual
6 S LEP MOW 2458940.5000 2020-04-01 00:00 7.3 N/A Visual Visual
7 R CAS MOW 2458940.5000 2020-04-01 00:00 10.2 N/A Visual Visual
8 RU VIR BFO 2458940.5000 2020-04-01 00:00 13.2 N/A Visual Visual
9 RV UMA SJTS 2458940.5000 2020-04-01 00:00 10.4259 0.0125 Johnson V CCD
10 V421 UMA SJTS 2458940.5000 2020-04-01 00:00 13.3467 0.1054 Johnson V CCD
11 RV UMA SJTS 2458940.5002 2020-04-01 00:00 10.4547 0.0125 Johnson V CCD
12 V421 UMA SJTS 2458940.5002 2020-04-01 00:00 13.3797 0.1053 Johnson V CCD
13 GW UMA SJTS 2458940.5002 2020-04-01 00:00 9.733 0.0192 Tri-Color Green DSLR
14 AM CVN VMT 2458940.5003 2020-04-01 00:00 14.204 0.009 Unfiltered with V Zeropoint CCD
15 RV UMA SJTS 2458940.5003 2020-04-01 00:00 10.408 0.0124 Johnson V CCD
16 V421 UMA SJTS 2458940.5003 2020-04-01 00:00 13.2015 0.0922 Johnson V CCD
17 GAIA19EYY HMB 2458940.5003 2020-04-01 00:00 12.644 0.029 Cousins I CCD
18 BS VEL HMB 2458940.5003 2020-04-01 00:00 12.218 0.026 Cousins I CCD
19 GDS_J0830083-412341 HMB 2458940.5003 2020-04-01 00:00 10.249 0.017 Cousins I CCD
20 GDS_J0830245-413544 HMB 2458940.5003 2020-04-01 00:00 12.486 0.028 Cousins I CCD
21 BH VEL HMB 2458940.5003 2020-04-01 00:00 10.652 0.018 Cousins I CCD
22 GDS_J0832094-412226 HMB 2458940.5003 2020-04-01 00:00 8.112 0.017 Cousins I CCD
23 GDS_J0831353-412848 HMB 2458940.5003 2020-04-01 00:00 13.396 0.051 Cousins I CCD
24 GDS_J0832181-413656 HMB 2458940.5003 2020-04-01 00:00 13.667 0.065 Cousins I CCD
25 WISE J083009.8-414308 HMB 2458940.5003 2020-04-01 00:00 14.580 0.140 Cousins I CCD