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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 40 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 ASASSN-21FH AVKB 2459317.4550 2021-04-12 22:55 08.032 0.002 Cousins R CCD
2 ASASSN-21FH AVKB 2459317.4650 2021-04-12 23:09 07.093 0.001 Cousins I CCD
3 ASASSN-21FH AVKB 2459317.4720 2021-04-12 23:19 08.841 0.001 Johnson V CCD
4 ASASSN-21fh AAX 2459317.6111 2021-04-13 02:39 8.7 N/A Visual Visual
5 N Sco 2021 FRF 2459317.3139 2021-04-12 19:32 10.635 0.002 Johnson B CCD
6 ASASSN-21FH BLD 2459317.5412 2021-04-13 00:59 8.901 0.012 Tri-Color Green DSLR
7 ASASSN-21fh AAX 2459317.5681 2021-04-13 01:38 8.8 N/A Visual Visual
8 ASASSN-21fh ALRB 2459317.6285 2021-04-13 03:04 8.9 N/A Visual Visual
9 ASASSN-21fh AAX 2459317.8417 2021-04-13 08:12 8.7 N/A Visual Visual
10 ASASSN-21FH SNU 2459317.6875 2021-04-13 04:29 8.807 0.03 Johnson V CCD
11 ASASSN-21FH SNU 2459317.6029 2021-04-13 02:28 8.899 0.036 Johnson V CCD
12 PNV J17091000-3730500 WCG 2459318.2153 2021-04-13 17:10 8.8 N/A Visual Visual
13 000-BNY-441 PEX 2459318.2326 2021-04-13 17:35 8.8 N/A Visual Visual
14 N SCO 2021 BJAK 2459317.9010 2021-04-13 09:37 8.914 0.045 Tri-Color Green CCD
15 N SCO 2021 BJAK 2459317.9005 2021-04-13 09:36 7.882 0.050 Tri-Color Red CCD
16 N Sco 2021 PEX 2459318.1339 2021-04-13 15:12 6.575 0.007 Cousins I CCD
17 N Sco 2021 PEX 2459318.1329 2021-04-13 15:11 10.325 0.004 Johnson B CCD
18 N Sco 2021 PEX 2459318.1321 2021-04-13 15:10 8.526 0.014 Johnson V CCD
19 ASASSN-21FH HMB 2459317.9220 2021-04-13 10:07 10.051 0.007 Johnson B CCD
20 ASASSN-21FH HMB 2459317.9226 2021-04-13 10:08 10.100 0.017 Johnson B CCD
21 ASASSN-21FH HMB 2459317.9231 2021-04-13 10:09 6.743 0.015 Cousins I CCD
22 ASASSN-21FH HMB 2459317.9233 2021-04-13 10:09 6.926 0.014 Cousins I CCD
23 ASASSN-21FH HMB 2459317.9237 2021-04-13 10:10 8.693 0.006 Johnson V CCD
24 ASASSN-21FH HMB 2459317.9241 2021-04-13 10:10 8.591 0.013 Johnson V CCD
25 N Sco 2021 RFDA 2459318.2917 2021-04-13 19:00 9.0 N/A Visual Visual