Sabik
Sabik, Eta Ophiuchi (η Oph), is a binary star system composed of two white subgiant stars located in the constellation Ophiuchus. With a combined apparent… Read More »Sabik
Subgiant Stars
Gamma Cassiopeiae
Gamma Cassiopeiae (γ Cas) is a spectroscopic binary star located in the constellation Cassiopeia. Informally known as Navi, it is one of the four brightest… Read More »Gamma Cassiopeiae
Ruchbah
Ruchbah, Delta Cassiopeiae (δ Cas) is an eclipsing binary star system located in the constellation Cassiopeia. With an apparent magnitude of 2.68, it is the… Read More »Ruchbah
Alhena
Alhena, Gamma Geminorum (γ Gem), is a spectroscopic binary star system located in the northern constellation Gemini. With an apparent magnitude of 1.915, it is… Read More »Alhena
Rasalhague
Rasalhague, Alpha Ophiuchi (α Oph), is a binary star system located in the constellation Ophiuchus. It marks the head of the celestial Serpent Bearer. With… Read More »Rasalhague
Algol
Algol, Beta Persei (β Per) is a triple star system located in the constellation Perseus. Commonly known as the Demon Star, it is one of… Read More »Algol
Markab
Markab, Alpha Pegasi (α Peg), is a giant or subgiant star located in the constellation Pegasus. Even though it has the designation Alpha, it is… Read More »Markab