The site Oort Cloud Report happens to bring up our (upcoming) asteroid champion:
https://oortcloudreport.github.io/news/space_article/planet9.html
[astrophysics staff], March 19 Vera Rubin Observatory’s Search for Planet Nine
If you haven’t already heard, the Vera Rubin telescope will revolutionize sky surveying. Never before will all-sky coverage (at least, from Chile) join with >8 meters of aperture. The result: a catalog of celestial objects the likes of which mankind cannot even fully predict. And yet, the Oort Cloud Report people will make one try at it.
Given the current status of searches for Planet Nine (the putative, Super-Earth- or Sub-Neptune-class planet in the far outer Solar System), we’ve narrowed the possible sky that it may be hiding in. And ‘hiding’ is the right word: Planet Nine is expected to be about magnitude 22, too faint for all but world-class telescopes. Well, Vera Rubin is certainly world-class, to say the least. One prediction is that Vera Rubin should find Planet Nine (or else set strict limits on its existence) within the first year or two of the survey.
If I sound a bit excited, well, it’s showing through from the original posters. The OCR writers are on the side of Planet Nine (unlike, say, Alan Stern) and expect its (supposed) confirmation to revolutionize models and history of our Solar System. At the very least, our System has no Super-Earths or Sub-Neptunes… for now. These such planets have been found to be common in the wider Milky Way, being common around other Suns. The OCR writers are already salivating about the possibility of sending a probe.
Well, we’ll soon find out either way. As I’ve mentioned, last-minute glitches with the Rubin observatory are being ironed out as we speak. Trial observations, and data alerts, have already begun; the issue is that the observatory cannot yet support consistent image quality, at full survey speeds. Those last glitches involve quality control and system stability. Can’t wait.