NGC 6809 (Messier 55)

R.A. 19 36.9, Dec - 31 03' (1950)

Magnitude Values

Variable	Period	Type	Source	System	R₂₁	R₃₁	R₄₁	₂₁	₃₁	₄₁
v1	0.57998	RRAB	KW	V	0.4788	0.3364	0.2237	3.8693	1.8273	5.9927
v1	0.57998	RRAB	OETAL99	V	-	-	-	-	1.8250	5.9840
v2	0.40615	RRC	OETAL99	V	-	-	-	-	0.9470	-
v3	0.66199	RRAB	KW	V	0.4026	0.1853	0.0868	4.0204	1.8630	6.1886
v3	0.66199	RRAB	OETAL99	V	-	-	-	-	1.8710	6.2060
v4	0.38416	RRC	OETAL99	V	-	-	-	-	1.0740	-
v5	0.37615	RRC	OETAL99	V	-	-	-	-	0.8050	-
v6	0.38882	RRC	OETAL99	V	-	-	-	-	0.7050	-
v7	0.68257	RRAB	KW	V	0.5372	0.3426	0.2085	4.1277	2.1646	6.7431
v7	0.68257	RRAB	OETAL99	V	-	-	-	-	2.1590	6.7290
v8	0.72196	RRAB	KW	V	0.4150	0.2204	0.0836	4.2702	2.5091	6.9627
v8	0.72196	RRAB	OETAL99	V	-	-	-	-	2.5210	6.9830
v11	0.30995	RRC	OETAL99	V	-	-	-	-	0.3060	-
v13	0.39784	RRC	OETAL99	V	-	-	-	-	1.3060	-
v14	0.52162	RRAB	OETAL99	V	-	-	-	-	1.8540	6.1690
v15	0.63729	RRAB	OETAL99	V	-	-	-	-	2.3150	7.3140

Color Values

v1	0.57998	RRA	KW	JB-V	0.4788	0.3364	0.2237	3.8693	1.8273	5.9927
v3	0.66199	RRA	KW	JB-V	0.4026	0.1853	0.0868	4.0204	1.8630	6.1886
v7	0.68257	RRA	KW	JB-V	0.5372	0.3426	0.2085	4.1277	2.1646	6.7433
v8	0.72196	RRA	KW	JB-V	0.4150	0.2204	0.0836	4.2702	2.5091	6.9629