新元史 · 柯劭忞 · Chapter 41 of 258

卷四十·志第七

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卷四十·志第七

○历七

△立成

至元十九年,郭守敬以《授时历》虽颁行,然立成之数尚无定稿,乃比类编次,整齐分秒,裁为二卷。《明志》据监本题:太史令臣王恂奉敕撰,谓恂之稿本,守敬卒成之。监本久轶,然《明志》所载《大统通轨》之立成,则出于守敬原书无疑也。今采附《历经》之后,以备步七政盈缩迟疾者之用焉。

太阳盈初缩未限立成(冬至前后二象限同用)

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