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Gemini is one of the constellations of the zodiac and is located in the northern celestial hemisphere. It was one of the 48 constellations described by the 2nd century AD astronomer Ptolemy , and it remains one of the 88 modern constellations today.
Castor is the second-brightest object in the zodiac constellation of Gemini. It has the Bayer designation α Geminorum, which is Latinised to Alpha Geminorum and abbreviated Alpha Gem or α Gem. With an apparent visual magnitude of 1.58, it is one of the brightest stars in the night sky.
1 Geminorum (1 Gem) is a star in the constellation Gemini.Its apparent magnitude is 4.15.. In the 19th century, John Flamsteed numbered the brighter stars, by constellation, from west to east, and 1 Geminorum was the first star listed in Gemini.
This is the list of notable stars in the constellation Gemini, sorted by decreasing brightness. Name B F Var HD HIP RA Dec vis. mag. abs. mag. Dist. Sp. class Notes ...
Mu Geminorum or μ Geminorum, formally named Tejat (/ ˈ t iː dʒ ə t /), [14] is a single star in the northern constellation of Gemini. From parallax measurements obtained during the Hipparcos mission, it is roughly 230 light-years (71 parsecs) distant from the Sun. [1] The position of the star near the ecliptic means that it is subject to ...
74 Geminorum (f Geminorum) is a K-type giant star in the constellation Gemini. It is located about 640 light-years from Earth based on its Gaia DR3 parallax. The star is often subject to lunar occultations, allowing an accurate measurement of its angular diameter. [1] It has an apparent magnitude of 5.05, making it faintly visible to the naked ...
Theta Geminorum (θ Gem, θ Geminorum) is a single [11] star in the northern zodiac constellation of Gemini. It is visual to the naked eye with an apparent visual magnitude of 3.59. [ 2 ] Based upon an annual parallax shift of 17.25 mas , [ 1 ] it is about 189 light years distant from the Sun .
Xi Geminorum (ξ Geminorum, abbreviated Xi Gem, ξ Gem), formally named Alzirr / ˈ æ l z ər /, [10] is a star in the zodiac constellation of Gemini. It forms one of the four feet of the outline demarcating the Gemini twins. [11] The star has an apparent visual magnitude of 3.35, [2] which is bright enough for it to be seen with the naked eye.