Never happened to me before.
Are you sure it's still labeled as unexplored?
Last time I had trouble scanning a planet it was because I had already scanned it and didn't realize.
I did but that did not work and I moved on. Can’t remember the exact system but it’s not far from where I am now in the Synuefe Sector. Thanks.Sounds like a bug.
Relog and try again?
That was no planet.....
Yes, but only when winged. Scan glitched and my wingman scanned the body but it never showed scanned for me and I could not scan it.
At least its not as bad as the invisible planet I had a long time ago. Couldn't even see it until you hit it.
Are you on PC?
If so check your journal files in here:
C:\Users\<username>\Saved Games\Frontier Developments\Elite Dangerous\
You'll be able to find the system you were in, and maybe some information about the unscannable body.
Let us know the name of the system and we can check out if the unscannable body is repeatable.
If you have your name on some planets and want to wait until you sell the data that's ok.