NGC 6121 (Messier 4)

R.A. 16 20.6, Dec -26 24'

Magnitude Values

Variable	Period	Type	Source	System	R₂₁	R₃₁	R₄₁	₂₁	₃₁	₄₁
v2	0.53568	RRAB	KW	V	0.5503	0.3539	0.2282	3.9051	1.9533	6.2956
v27	0.61204	RRAB	KW	V	0.5316	0.3481	0.1973	4.2126	2.3600	6.7741
v29	0.52249	RRAB	KW	V	0.5367	0.3820	0.2559	3.9975	2.0102	6.3349
v32	0.57910	RRAB	KW	V	0.4744	0.3255	0.1640	4.0217	2.2027	6.6186
v33	0.61455	RRAB	KW	V	0.5196	0.3513	0.2144	4.1748	2.2221	6.6841

Color Values

v2	0.53568	RRA	KW	JB-V	0.5503	0.3539	0.2282	3.9051	1.9533	6.2958
v2	0.53568	RRA	KW	JV-I	0.5503	0.3539	0.2282	3.9051	1.9533	6.2958
v27	0.61204	RRA	KW	JB-V	0.5316	0.3481	0.1973	4.2126	2.3600	6.7743
v32	0.57910	RRA	KW	JB-V	0.4744	0.3255	0.1640	4.0217	2.2027	6.6188
v32	0.57910	RRA	KW	JV-I	0.4744	0.3255	0.1640	4.0217	2.2027	6.6188
v33	0.61455	RRA	KW	JB-V	0.5196	0.3513	0.2144	4.1748	2.2221	6.6843
v33	0.61455	RRA	KW	JV-I	0.5196	0.3513	0.2144	4.1748	2.2221	6.6843