Kosmos 2431 (Russian: Космос 2431 meaning Cosmos 2431) is one of a set of three Russian military satellites launched in 2007 as part of the GLONASS satellite navigation system.
A Proton-K carrier rocket with a Blok DM upper stage was used to perform the launch which took place at 07:35 UTC on 26 October 2007.
The launch successfully placed the satellites into Medium Earth orbit.
The United States Space Command assigned it the Satellite Catalog Number 32277.
[1] It is no longer part of the GLONASS constellation, but used to be in the third plane, orbital slot 17.