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卷29 志四 天文四

Volume 29 Treatises 4: Astronomy 4

Chapter 29 of 清史稿 · Draft History of Qing
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1
Fixed-star ecliptic coordinates, Kangxi renzi (1672), table 1: the sun sets the clock; the stars mark the calendar. Because the sun moves along the ecliptic, fixed-star work requires ecliptic longitude and latitude to the minute. Stars also creep eastward on the ecliptic; for any epoch, adjust longitude by only fifty-one seconds per year. This edition follows the Kangxi renzi star survey—longitude, latitude, hemisphere, and magnitude—in two scrolls. Scroll one lists every named star—and neighbors—across one hundred eighty degrees from Lowering Harvest (Xu) to Quail Tail (Si), as follows.
EclipticLongitudeLatitudeEclipticLongitudeLatitude
Star NamePalaceDegreesMinutesDirectionDegreesMinutesMagnitudeStar NamePalaceDegreesMinutesDirectionDegreesMinutesMagnitude
Celestial Hook 2Xu (11th branch)0°0′0°21′North71°49′Magnitude 4Celestial Hook 1Xu (11th branch)0°0′0°54′North74°0′Magnitude 4
Celestial Privy 4Xu (11th branch)0°0′0°57′South14°0′Magnitude 5
Celestial Park 4Xu (11th branch)0°2′0′South57°50′Magnitude 3
Celestial Privy 2Xu (11th branch)0°2′3°7′South13°40′Magnitude 5
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https://ctext.org/library.pl?if=gb&file=205543&by_title=%E6%B8%85%E5%8F%B2%E7%A8%BF&page=64004
Source: Draft History of Qing, Treatise 4 (Astronomy), ctext.org.
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