This is a collection of libraries that will help you with your CubeSat development.

Adafruit Sensor Library
Basic Arduino sensor library needed for the BMP-280 and other sensors from Adafruit.
Adafruit_Sensor

BMP-280 Pressure/Temperature Sensor Library
This is a modified library that works with the GY-BM280 sensor set. It is configured to run with the I2C standard already active.
TiS_BMP280_Library