Messier Catalog » M4 — NGC 6121
Rho Ophiuchi
I took advantage of low horizons in a dark site to capture this close-up of the elusive Rho Ophiuchi system with bright yellow Antares, purple-bluish Alniya and the M4 and NGC6144 clusters.
RA
16h 23.6m
Dec
-26°32
Magnitude
5.6 ⚪⚪⚪⚪⚪⚫⚫⚫⚫⚫
Size
26.3
Distance
7,200 light years
Season
☀ Summer
Difficulty
🔴 Hard