Translation guide
The Plough is a prominent asterism in the constellation Ursa Major, known as the Big Dipper in North America. In Japanese, it is most commonly referred to as 北斗七星 (hokutoshichisei), literally 'the seven stars of the Northern Dipper'. This guide covers how to refer to this star pattern in Japanese, including cultural and astronomical contexts.
Referring to the seven-star pattern in Ursa Major, commonly known as the Plough or Big Dipper.
The standard astronomical and everyday term for the Big Dipper/Plough. Literally 'Northern Dipper Seven Stars'. Used in both formal and casual contexts.
Tonight, the Big Dipper is clearly visible.
The Big Dipper is in the northern sky.
Short for 北斗七星. Common in compounds and more concise contexts, but still widely understood.
The shape of the Big Dipper resembles a ladle.
A more poetic or traditional way to say 'the seven stars of the Northern Dipper'. Less common in modern everyday speech, but found in literature or songs.
The seven stars of the Northern Dipper are shining in the night sky.
Referring to the entire constellation Ursa Major, not just the Plough asterism.
The Japanese name for the constellation Ursa Major. Use this when talking about the constellation as a whole, not just the seven stars.
Ursa Major is visible all year round in the northern hemisphere.
北斗七星 (hokutoshichisei) refers specifically to the seven-star asterism (the Plough/Big Dipper), while おおぐま座 (oogumaza) is the entire constellation Ursa Major. In everyday conversation, 北斗七星 is much more common when pointing out the star pattern.
In Japan, the Big Dipper is traditionally seen as a ladle (ひしゃく) rather than a plough. The handle is called 柄杓 (hishaku), and the bowl is 斗 (masu). This imagery is reflected in the word 北斗 (Northern Dipper).