It might be that you have access to it, but it is difficult to get in the right spot that lets you warp to it. I know for me, I will be at .05 km away or so and I cant warp to it. If I fly around it for a bit though, the warp thing will come up. Maybe see if that works. I would like it if they gave it a bit wider range from which you could warp to the Hromi cluster, as well as the Arcunis arm though.