Wikipedia says the [Chicxulub impactor](https://en.wikipedia.org/wiki/Chicxulub_impactor) is thought to have been a 10-15 km diameter object. Would it have been visible to a (human<sup>*</sup>) naked eye before impact? And if so, would it have appeared like a star that grew brighter and brighter each night?

<sup>* I know, there were no humans at the time.</sup>