The Astronomical Observatory at Majmaah University undertakes many tasks including:

 

- Consolidate the act of monitoring and sighting crescent.
- Monitor various astronomical phenomena.
- Promote scientific research in the field of astronomy
- Achieve national and global leadership in the field of astronomy and its research.
- Disseminate the contributions of Muslim scholars in the field of science, especially astronomy.
- Serve governmental and private institutions 
- Strengthen connection and cooperation with local and international institutions of common interest.
- Conduct specialized training courses and seminars.
- Hold local, Arab and Islamic conferences and seminars in the field of astronomy.
- Follow up on global activity and technological development in various fields of the observatory.