A secret, but a discoverable one! A friend of mine took data points from one of my orbit and worked out the planet's mass from there. It's only one orbit, and perigee is grazing the atmosphere at that(43700m), but apparently the math works out well enough. According to him surface escape velocity is 3.431 km/s, and at 100 km altitude i' goes down to 3.176 km/s. The planet itself masses around about 5.29e22 kg