09-15-2025, 05:25 PM
Quote:2025 FA22 was discovered on March 29, 2025 by Pan-STARRS 2. This object has an absolute
magnitude of 21.5 that suggests a diameter within a factor of two of 160 meters. Otherwise
little is known about its physical properties, other than a lower bound of ~2 hours on the
rotation period from photometry obtained by N. Moskovitz et al. (pers. comm.) at Lowell Observatory.
2025 FA22 will approach within 0.00563 au (2.19 lunar distances) on September 18, when
the SNRs at Goldstone should be very strong and ideal for detailed imaging.
https://echo.jpl.nasa.gov/asteroids/2025...nning.html
When "the big one" comes, we might get a couple days notice like this. 50/50 chance we would get any forewarning. But it won't be months or years.
Apophis IS super close though, I gotta say... the likelihood is that there is a much bigger threat with an even closer rendezvous and we'll never see it coming.
