NGC 6819
Variability periods
No
Ref
Pv
Amp
Type
1787
135
6.5
0.06
BY Dra
4226
135
10.9
0.15
9544
135
11.5
0.02
9548
135
9.6
0.04
9559
135
1.332
EA
9560
135
0.2705
EB
9561
135
1.451
EB?