Translation guide
A star chart is a map of the night sky used for astronomy, navigation, or stargazing. In Japanese, the most common term is 星図 (seizu), but other words exist depending on context.
star chart (astronomy)
star chart (astrology)
A map of stars and constellations for scientific or amateur astronomy.
The standard term for a star chart or star atlas. Used in astronomy.
This star chart shows the constellations of the northern hemisphere.
Literally 'celestial body map'. More formal or technical, often used in academic contexts.
A planisphere or star wheel, a rotating star chart used to find constellations for a given date and time. Common among stargazers.
A less common term, sometimes used for printed star charts or tables.
A chart used for celestial navigation at sea or in aviation.
Specifically a chart used for celestial navigation, plotting positions of celestial bodies for sextant observations.
The navigator determined the ship's position using a celestial navigation chart.
Can also be used in navigation contexts, though less specific than 天測図.
A diagram used in astrology showing the positions of celestial bodies at a specific time, such as a birth chart.
The common loanword for a horoscope or astrological chart.
She checks her horoscope every day.
Literally 'star fortune-telling chart'. A descriptive phrase for an astrological chart.
Specifically a natal chart in astrology. Used by enthusiasts.
Reading a natal chart is difficult.
星図 is the most common word for a star map. 天体図 is more formal and often used in scientific publications. In everyday conversation, 星図 is preferred.
星座表 (seizahyō) usually means a list or table of constellations, not a graphical chart. Use 星図 or 星座早見盤 for a visual map.
I checked the positions of the planets using a celestial chart.
I turned the planisphere to find out which stars are visible tonight.
I found an old star chart in the library.
昔の船乗りは星図を頼りに航海した。
Sailors in the past navigated using star charts.
I had an astrological chart made for me.