[amsat-bb] Another Balloon - what frequency?

[Scott]

Hope everyone had a nice Christmas.

I see that there is another balloon headed my way:

https://tracker.habhub.org/#!mt=roadmap&mz=6&qm=1_day&mc=37.13154,281.71854&f=KD4KOY-11

... and on the side legend it indicates "Received 1h 56m ago via:  APRS, W4DEX".

I have searched but cannot find what frequency this thing might be on.  Since APRS is indicated, that would be 144.39 in this part of the world but it could also be using something like 145.825 and be picked up by iGates configured to receive the previously-used ISS packet traffic on VHF.

I'm usually fairly decent at finding things on Google, but no luck so far with this.  Would anyone more familiar with balloon tracking possibly point me in the right direction?

Thanks!

-Scott,  K4KDR
Montpelier, VA  USA
twitter:  scott23192