Observatorium Ilmu FalakUniversity of Muhammadiyah North Sumatra .
217 Denai St, Post Graduate Building 7th Floor, Medan City, Indonesia. Postal Code: 20226.
Fadilla Sayu Ananda Universitas Muhammadiyah Sumatera Utara Indonesia
Alya Fathi Muhammad Hasibuan Universitas Muhammadiyah Sumatera Utara Indonesia
Rihan Yuhyi Universitas Muhammadiyah Sumatera Utara Indonesia