Beyond its mythical nature, it's orthogonal to astronomy anyhow; "Santa" is supposed to be magical but Earthly, not astronomical.
Flightradar24 usually do some form of 'Santa Tracker' on the appropriate dates which is a more appropriate context, if you believe it should be encouraged at all.
Yep. Low Earth orbit, confined to regions under christian influence. My comment was tongue-in-cheek.
stargazing is more broadly skygazing. Santa is no more or less astronomical than a meteor (nee asteroid) -- both fly through the sky at incredible speeds, and light up (when Rudolph is present)