Isn't that the whole point of Askonia?
And why things like Solar Shielding (and the player skill that reduces the effects of corona damage etc.) exist? I thought the whole concept of Sindria sitting under the "harsh fires of Askonia" was something key to the system's lore, as well as that of the Sindrian Diktat faction.
Also the jump point and planet actually aren't inside the corona, they're just outside it, so if you're being pushed away on entering the system it's due to solar flares, which
wouldn't be avoided by being a hundred or so units further away. If you make a beeline from the jump point to Sindria or vice versa, then yes you do pass through the corona for a bit, but that's a simple fix: just skirt the edge of it manually.
If you're playing as/with the Diktat in a roleplay sense, then I can only recommend you look into the aforementioned skill and the Solar Shielding hullmod. They exist for just this sort of reason.