The existing answer seems to suggest printing the model in the orientation as shown (e.g. with the Z-axis of the part corresponding to the Z-axis to the printer) with either support or splitting it in half.
Using supports in this way is a bad idea, because it will leave a very rough surface finish due to the geometry (and be very hard to remove, unless you want to deal with troublesome support material). The model also will have no contact with the build plate at all, making it very likely that it will detach (even when you're using support, you want a reasonable amount of surface area making contact with the build plate). You'd have to drill out the hole in the middle (since support can not be removed there).
The approach of splitting it in half and printing in this orientation isn't ideal either, because the surface finish will again be very rough due to the very gentle curves of the star. The hole in the middle will also turn out a bit deformed and flattened and require support.
Instead, for this model, a much better approach is to split it like this:
The top half has no overhang at all, and the bottom half only has gentle overhangs that are easy to print without support. The surface finish will be much better compared to printing in the other orientation. Moreover, the hole can also be printed in the XY plane leaving it cleaner as well.