Fetching details from the dictionary...
Capricornus (constellation); Capricorn; the Goat
山羊座は冬の星座だ。
Capricornus is a winter constellation.
山羊座の人は真面目で努力家だ。
Capricornus people are serious and hardworking.
彼女は山羊座なので責任感が強い。
She has a strong sense of responsibility as a Capricornus.