Its too bad the 100D rule didn't abide by this same concept... All changes should be rational, logical, and scientifically sound...
The 100D mechanic is an arbitrary game mechanic with no 'scientific' basis. When applied to 'any body' as Mongoose Traveller does - it unfortunately conflicts with other RAW for many OTU folks.
Logically it also has issues. The 'any object' is a vague definition - a micrometeorite or even space dust is 'any object' (and how about a Lyman-alpha blob - is that 'an object'). Thus, taking the Rules As Written, one could say no jump could succeed.
Oh - and what is 100D for a black hole?
As a game mechanic designed for logical game limits - to provide an element for adventure we can hang RP on - it is great (we can't jump yet - we could all die!) . If only it were limited itself so that its greater impact didn't break the intent behind other mechanics, suspenders of disbelief, or worse, game play.
100D for standard worlds works really well for me as long as there are different diameters based on a rational 'reason' that doesn't get stupid or silly when it comes to other objects and rule mechanics.