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The Tenmongata (天文方, Astronomy Agency) was an institute for astronomical studies operated by the Tokugawa shogunate in Edo , Japan (today's Tokyo ). It is one of the predecessors of today's University of Tokyo .

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58-609: Traditionally, astronomical studies and revision of the calendar were carried out by the Onmyo-no-tsukasa (陰陽寮), which was established by Emperor Tenmu in the 7th century. The institute was established in 1684 when the Tokugawa Shogunate decided to switch from the Senmyō calendar , which had been in use for 823 years and had thus accumulated significant errors, to the newly invented Jōkyō calendar . The inventor of

116-598: A copy of the Kan'ei printed edition in 1754. After meeting Mabuchi in 1763, Norinaga began to devote his efforts to an in-depth scholarly study of the text. A monumental 44-volume study of the Kojiki called Kojiki-den ( 古事記伝 , "Commentary on the Kojiki ") , composed over a 34-year period (1764–1798), was the fruit of his labor. With Norinaga, the Kojiki assumed an importance equal to the Nihon Shoki ; in fact, in his view

174-473: A memorial shrine ( misasagi ) in Nara Prefecture . The Imperial Household Agency designates this location as Tenmu's mausoleum . It is formally named Hinokuma no Ōuchi no misasagi. In 675 Emperor Tenmu banned the consumption of domesticated animal meat (horse, cattle, dogs, monkeys, birds), from April 1 to September 30 each year, due to the influence of Buddhism. In the Nihon Shoki , Tenmu

232-565: A national epic like Beowulf is in the English-speaking world. During the 1920s and 30s, linguist Hashimoto Shinkichi studied the phonology of the Old Japanese language , and his conclusions were applied by scholars to the study of the text. The Kojiki continued to attract the attention of academics and other specialists in the post-war period, which saw the appearance of numerous editions, translations and commentaries on

290-468: A poem written after the Jinshin War ended: Our Sovereign, a god, At Asuka, Emperor Tenmu was enthroned. He elevated Unonosarara to be his empress. Events of his reign include: Tenmu reigned from this capital until his death in 686. His wife, Empress Jito became the emperor until their son became the 42nd Emperor. The actual site of his grave is known. This emperor is traditionally venerated at

348-411: A third wife, Nunakawahime ( 沼河比売 ) of Koshi . A tiny god riding on the waves of the sea in a bean-pod appears before Ōkuninushi. A god in the form of a scarecrow named Kuebiko ( 久延毘古 ) identifies the dwarf as Sukunabikona-no-Kami ( 少名毘古那神 ), a son of Kamimusubi-no-Kami ( 神産巣日神 ), one of the three primordial Kotoamatsukami . Sukunabikona assists Ōkuninushi in his task of creating and developing

406-573: Is a collective term for the very few most powerful men attached to the court of the Emperor of Japan in pre- Meiji eras. In general, this elite group included only three to four men at a time. These were hereditary courtiers whose experience and background would have brought them to the pinnacle of a life's career. During Tenmu's reign, this apex of the Daijō-kan included: The years of Tenmu's reign were marked by only one era name or nengō , which

464-465: Is a condensed summary of the contents of the text, including many of the names of gods, emperors, and locations as well as events which took place in association with them. The original Japanese is included in parentheses where appropriate. Ō no Yasumaro 's preface, in the form of a dedicatory address to Empress Genmei , begins with a poem summarizing the main contents of the work. He then relates how Emperor Tenmu commissioned Hieda no Are to memorize

522-537: Is an early Japanese chronicle of myths , legends, hymns , genealogies, oral traditions , and semi-historical accounts down to 641 concerning the origin of the Japanese archipelago , the kami ( 神 ) , and the Japanese imperial line . It is claimed in its preface to have been composed by Ō no Yasumaro at the request of Empress Genmei in the early 8th century (711–712), and thus is usually considered to be

580-418: Is described as a great innovator, but the neutrality of this description is doubtful, since the work was written under the control of his descendants. It seems clear, however, that Tenmu strengthened the power of the emperor and appointed his sons to the highest offices of his government, reducing the traditional influence of powerful clans such as the Ōtomo and Soga clans . He renewed the system of kabane ,

638-471: Is said that Tenmu asked that each household was encouraged to build an altar with a dais where a Buddha-image and a sutra could be placed so that family worshiping could be held, thus inventing the butsudan . On the other hand, all Buddhist priests, monks and nuns were controlled by the state, and no one was allowed to become a monk without the state's permission. This was aimed at preventing cults and stopping farmers from turning into priests. Kugyō ( 公卿 )

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696-489: Is the oldest existing manuscript. While divided into the Ise branch, it is actually a mixture of the two branches. The monk Ken'yu based his copy on Ōnakatomi Sadayo's copy. In 1266, Sadayo copied volumes one and three but did not have access to the second volume. Finally, in 1282, he obtained access to the second volume through a Urabe-branch manuscript that he used to transcribe. The Kojiki contains various songs and poems. While

754-533: The Gōtō Kojiki ( 鼇頭古事記 , " Kojiki with Marginal Notes") was printed by Deguchi (Watarai) Nobuyoshi , a priest at Ise Shrine , in 1687 ( Jōkyō 4). The birth of nativist studies ( kokugaku ) and nationalist sentiment during the Edo period saw a reappraisal of the Kojiki . Kokugaku scholars saw Japan's earliest writings as the repository of a uniquely superior Japanese identity that could be revived by recovering

812-637: The Ise Shrine . He was succeeded by his wife, Empress Jitō . Tenmu was the youngest son of Emperor Jomei and Empress Kōgyoku , and the younger brother of the Emperor Tenji . His name at birth was Prince Ōama ( 大海人皇子 , Ōama no ōji ) . He was succeeded by Empress Jitō , who was both his niece and his wife. During the reign of his elder brother, Emperor Tenji, Tenmu was forced to marry several of Tenji's daughters because Tenji thought those marriages would help to strengthen political ties between

870-454: The Kojiki and Nihon Shoki achieved a sort of scriptural status under State Shintō , which viewed the stories contained therein as orthodox national history. Official ideology upheld as unquestionable fact the belief in the emperor's divinity and the idea of Japan as a racially superior "national body" ( kokutai ), with scholars who questioned their veracity facing the threat of censorship, forced resignation, or even trial in court. Until

928-599: The Kojiki is apparently based on sources handed down within the court. Whereas the Nihon Shoki , owing to its status as one of the six imperial histories, was widely read and studied during the Heian period (794–1185), the Kojiki was mostly treated as an ancillary text. Indeed, a work known as the Sendai Kuji Hongi (also known as the Kujiki ), claimed to have been authored by Prince Shōtoku and Soga no Umako,

986-628: The Kojiki was a more trustworthy source for ancient Japanese traditions than was the Shoki precisely because it was free of "Chinese mentality". He viewed the Kojiki as a true account of actual events that when read correctly, could reveal Japan in its pristine, ideal state as a community where the kami , the emperor and the people lived in harmony. Norinaga's work was carried on in different directions by his disciple Hirata Atsutane and his rivals Fujitani Mitsue (1781–1849) and Tachibana Moribe (1768–1823), who each produced commentaries and treatises on

1044-617: The Meiji era , the text's sacred nature was not known to have been questioned. However, the Kojiki was still widely seen as inferior to the Nihon Shoki until Motoori Norinaga wrote the Kojiki-den . In 1913, Tsuda Sōkichi argued in a study that the Kojiki , particularly in its earlier sections, was neither history nor myth but a document created to legitimize the rule of the imperial line. While his conclusions led to considerable controversy, his influence remains in subsequent studies of

1102-706: The "Record of the Emperors", the Kokki ( 国記 , also Kunitsufumi ) or the "National Record", and other "fundamental records" ( 本記 , hongi or mototsufumi ) pertaining to influential clans and free subjects. Out of these texts, only the Kokki survived the burning of Soga no Emishi 's estate (where these documents were kept) during the Isshi incident of 645, and was itself apparently lost soon after. The Kojiki 's preface indicates that leading families also kept their own historical and genealogical records; indeed, one of

1160-407: The ancient language they were written in; the Kojiki , by virtue of its antiquity, gained the status of a sacred text. The Kojiki came to be highly regarded that scholars such as Kada no Azumamaro and Kamo no Mabuchi – himself a student of Azumamaro – produced annotated versions of it. The Kojiki received its most serious study and exposition in the hands of Motoori Norinaga , who obtained

1218-510: The army of the young Emperor Kōbun fought in the northwestern part of Mino (nowadays Sekigahara, Gifu ), an incident known as the Jinshin War . Tenmu's army won and Kōbun committed suicide. As might be expected, Emperor Tenmu was no less active than former-Emperor Tenji in improving the Taika military institutions. Tenmu's reign brought many changes, such as: (1) a centralized war department

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1276-722: The calendar, Harumi Shibukawa , was appointed as the head of the institute. The institute was also responsible for surveying, chorography, and translating European academic books and papers. The translation department (蛮書和解御用, Bansho Wagegoyo) eventually spun off to form the Bansho Shirabesho , one of the predecessors of humanities studies at the University of Tokyo . The eighth shogun Yoshimune invested heavily in this institute to absorb European modern natural science, resulting in an accumulation of distinguished scholars, imported materials and equipments. The Kansei Calendar

1334-401: The capital, Omikyō in Ōmi Province (today in Ōtsu ). A year later, (in 672) Tenji died and Prince Ōtomo ascended to the throne as Emperor Kōbun . Tenmu assembled an army and marched from Yoshino to the east, to attack the capital of Omikyō in a counterclockwise movement. They marched through Yamato, Iga and Mino Provinces to threaten Omikyō in the adjacent province. The army of Tenmu and

1392-498: The claims of noble families and to reorganize them into a new system of ranks and titles are also possible factors for its compilation. The Kojiki 's narrative establishes the Yamato line 's right to rule via myth and legend, portraying it as the progeny of heavenly deities and the rightful heir to the land of Japan. A good part of the latter portion of the text is spent recounting various genealogies which served not only to give

1450-615: The commencement of Taihō in 701. In this context, Brown and Ishida's translation of Gukanshō offers an explanation about the years of Empress Jitō's reign which muddies a sense of easy clarity in the pre-Taihō time-frame: Unless otherwise noted (as BC), years are in CE  / AD   Imperial Consort and Regent Empress Jingū is not traditionally listed. Kojiki The Kojiki ( 古事記 , "Records of Ancient Matters" or "An Account of Ancient Matters") , also sometimes read as Furukotofumi or Furukotobumi ,

1508-492: The direct predecessors of sciences studies at the University of Tokyo. Emperor Tenmu Emperor Tenmu ( 天武天皇 , Tenmu tennō , c.  631 – October 1, 686) was the 40th Emperor of Japan , according to the traditional order of succession . He ascended to the throne following the Jinshin War , during which his army defeated that of Emperor Kōbun . Tenmu reigned from 673 until his death in 686, amid

1566-473: The editor of the Nihon Shoki and father of Emperor Junnin . Through Prince Kusakabe, Tenmu had two emperors and two empresses among his descendants. Empress Kōken was the last of these imperial rulers from his lineage. Emperor Tenmu is the first monarch of Japan, to whom the title Tennō ( Emperor of Japan ) was assigned contemporaneously—not only by later generations. The only document on his life

1624-442: The first of six histories commissioned by the imperial court, which was modeled on Chinese dynastic histories and was intended to be a national chronicle that could be shown with pride to foreign envoys, the Kojiki is inward looking, concerned mainly with the ruling family and prominent clans, and is apparently intended for internal consumption. Whereas the Nihon Shoki uses a variety of source documents (including Chinese texts),

1682-465: The genealogies and records of the imperial house years earlier, and how Genmei in turn ordered Yasumaro to compile a written record of what Are had learned. He finally concludes the preface with a brief explanation of the Chinese characters used to transcribe native Japanese words in the text and the division of the work into three volumes. Izanagi divides the world among his three children: Amaterasu

1740-611: The hereditary titles of duty and rank, but with alterations, including the abolition of some titles. Omi and Muraji , the highest kabane in the earlier period, were reduced in value in the new hierarchy, which consisted of eight kinds of kabane. Each clan received a new kabane according to its closeness to the imperial bloodline and its loyalty to Tenmu. Tenmu attempted to keep a balance of power among his sons. Once he traveled to Yoshino together with his sons, and there had them swear to cooperate and not to make war on each other. This turned out to be ineffective: one of his sons, Prince Ōtsu,

1798-641: The historical records and myths are written in a form of the Chinese language , the songs are written in Old Japanese with the Man'yōgana writing system, which uses Chinese characters only phonetically. The Kojiki is divided into three parts: the Kamitsumaki ( 上巻 , "upper volume" ) , the Nakatsumaki ( 中巻 , "middle volume") and the Shimotsumaki ( 下巻 , "lower volume") . What follows

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1856-484: The imperial (Yamato) court and prominent clans began during the reigns of Emperors Keitai and Kinmei in the 6th century, with the first concerted effort at historical compilation of which we have record being the one made in 620 under the auspices of Prince Shotoku and Soga no Umako . According to the Nihon Shoki , the documents compiled under their initiative were the Tennōki ( 天皇記 , also Sumera-mikoto no fumi ) or

1914-413: The imperial family an air of antiquity (which may not necessarily reflect historical reality), but also served to tie, whether true or not, many existing clans' genealogies to their own. Regardless of the work's original intent, it finalized and possibly even formulated the framework by which Japanese history was examined in terms of the reign of emperors. In contrast to the Nihon Shoki (compiled 720),

1972-432: The imperial throne. During his reign there was increased emphasis on the tie between the imperial household and Ise Grand Shrine (dedicated to the ancestor goddess of the emperors, Amaterasu ) by sending his daughter Princess Ōku as the newly established Saiō of the shrine, and several festivals were financed from the national budget. He also showed favor to Buddhism , and built several large temples and monasteries. It

2030-426: The jealousy of his brothers, who begin to make repeated attempts on his life. Seeking refuge in a subterranean realm ruled by Susanoo called Ne-no-Katasukuni ( 根之堅洲国 ), Ōnamuji meets and falls in love with Susanoo's daughter Suseribime-no-Mikoto ( 須勢理毘売 ). Upon learning of their affair, Susanoo imposes four trials on Ōnamuji, each of which he overcame with Suseribime's help. Ōnamuji manages to outwit Susanoo and leave

2088-498: The late Asuka period . During his reign, Tenmu implemented political and military reforms, consolidating imperial power and centralizing governance. His foreign policy favored the Korean kingdom of Silla while severing diplomatic relations with the  Tang dynasty  of China. He used religious structures to bolster the imperial authority, building several Buddhist temples and monasteries as well as strengthening ties with

2146-530: The middle (second) volume. It is due to this neglect that the Kojiki is available only in comparatively late manuscripts, the earliest of which dates to the late 14th century. It was with the advent of printing in the early modern period that the Kojiki first reached a wide audience. The earliest printed edition of the text was the Kan'ei Kojiki ( 寛永古事記 ), published in Kyoto in 1644 ( Kan'ei 21). A second edition,

2204-564: The oldest extant literary work in Japan . The myths contained in the Kojiki as well as the Nihon Shoki ( 日本書紀 ) are part of the inspiration behind many practices and unified "Shinto orthodoxy". Later, they were incorporated into Shinto practices such as the misogi purification ritual. It is believed that the compilation of various genealogical and anecdotal histories of

2262-458: The realm, taking his new wife Suseribime as well as Susanoo's sword, koto , and bow and arrows back with him, but not before being advised by Susanoo to change his name to Ōkuninushi-no-Kami ( 大国主神 , "Master of the Great Land"). Ōkuninushi defeats his wicked brothers and becomes the lord of Ashihara-no-Nakatsukuni. Under the name Yachihoko-no-Kami ( 八千矛神 , "Eight Thousand Spears"), he takes

2320-465: The reasons it gives for the compilation of the Kojiki is the correction of errors that had supposedly crept into these documents. According to the preface, Emperor Tenmu (reigned 673–686) ordered the review and emendation of clan documents and commissioned a certain court attendant ( toneri ) of exceptional memory named Hieda no Are to memorize records and oral traditions concerning the imperial lineage. Beyond this memorization, nothing occurred until

2378-412: The reign of Empress Genmei (reigned 707–715), who on the 18th of the 9th month of 711 ( Wadō 4) ordered the courtier Ō no Yasumaro to record what had been learned by Hieda no Are. He finished and presented his work to Empress Genmei on the 28th of the 1st month of 712 (Wadō 5). The Kojiki is a collation of different traditions woven into a single "official" mythology, made in an attempt to justify

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2436-399: The rule of the imperial Yamato polity and at the same time to subsume different interest groups under its wing by giving them a place and an interest in the national genealogy-mythology. Apart from furthering the imperial agenda, an increased interest in the nation's origins in reaction to the influx of foreign culture and the need for an authoritative genealogical account by which to consider

2494-498: The text (particularly in post- World War II scholarship), which amounts largely to development and correction of the line of thought originally proposed by him. In reaction to Tsuda, Watsuji Tetsurō (1920) argued for a literary appreciation of the Kojiki, claiming that this gave it inner coherence. Kurano Kenji (1927) took it a step further, proposing that the Kojiki may best be compared with Western epic literature and regarded as

2552-606: The text by authors such as Kurano Kenji, Takeda Yūkichi , Saigō Nobutsuna , and Kōnoshi Takamitsu . There are two major branches of Kojiki manuscripts: Ise and Urabe. The extant Urabe branch consists of 36 existing manuscripts all based on the 1522 copies by Urabe Kanenaga. The Ise branch may be subdivided into the Shinpukuji-bon ( 真福寺本 ) manuscript of 1371–1372 and the Dōka-bon ( 道果本 ) manuscripts. The Dōka sub-branch consists of: The Shinpukuji-bon manuscript (1371–1372)

2610-417: The text. The Kojiki became once more the object of scholarly focus and discussion in the Meiji period with the introduction of Western academic disciplines such as philology and comparative mythology . The importance of the text as a work of literary value was recognized, and scholars realized that its accounts were comparable in many ways to ancient Greek and Roman myths . At the same time, however,

2668-418: The throne, and felt the necessity to strengthen his position through politically advantageous marriages. Tenji was particularly active in improving the military institutions which had been established during the Taika reforms. In his old age, Tenji had a son, Prince Ōtomo, by a low-ranking consort. Since Ōtomo had weak political support from his maternal relatives, the general wisdom of the time held that it

2726-400: The two brothers. The nieces he married included Princess Unonosarara, today known as Empress Jitō, and Princess Ōta . Tenmu also had other consorts whose fathers were influential courtiers. Tenmu had many children, including his crown prince Kusakabe by Princess Unonosarara; Princess Tōchi ; Prince Ōtsu and Princess Ōku by Princess Ōta (whose father also was Tenji); and Prince Toneri ,

2784-498: The two gods each chewed and spat out an object carried by the other (Amaterasu Susanoo's sword, Susanoo Amaterasu's magatama beads) during the rite of oath-taking. Susanoo, declaring himself the winner of the contest, "raged with victory" and proceeds to wreak havoc upon Takamagahara, causing Amaterasu to hide in the Ama-no-Iwato ( 天岩戸 , the "Heavenly Rock Cave"), plunging heaven and earth into total darkness. The gods, led by

2842-451: The wise Omoikane-no-Kami ( 思金神 ), eventually persuade her to come out of the cave, restoring light to the world. As punishment for his misdeeds, Susanoo is thrown out of Takamagahara. A descendant of Susanoo, Ōnamuji-no-Kami ( 大穴牟遅神 ), helps a hapless hare that had been mistreated by his eighty brothers ( 八十神 , yasogami ); the hare, in turn, helps Ōnamuji win the hand of the goddess Yagamihime ( 八上比売 ) of Inaba . This earns Ōnamuji

2900-466: Was Nihon Shoki . However, it was edited by his son, Prince Toneri, and the work was written during the reigns of his wife and children, causing one to suspect its accuracy and impartiality. He is also mentioned briefly in the preface to the Kojiki , being hailed as the emperor to have commissioned them. Tenmu's father died while he was young, and he grew up mainly under the guidance of Empress Saimei. He

2958-559: Was allotted Takamagahara ( 高天原 , the "Plain of High Heaven"), Tsukuyomi the night, and Susanoo the seas. Susanoo, who missed his mother and kept weeping and howling incessantly, rejects his appointed task, leading Izanagi to expel him. Susanoo then goes up to Takamagahara, claiming to wish to see his sister. When a suspicious Amaterasu went out to meet him clad in armor, Susanoo protested his innocence and proposed that they exchange oaths . Five male kami (Amaterasu's sons) and three female kami (Susanoo's daughters) come into existence when

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3016-529: Was considered to be earlier and more reliable than the Kojiki . (Modern scholarly consensus holds the Kuji Hongi to be a Heian period forgery based on both the Kojiki and the Shoki , although certain portions may indeed preserve genuine early traditions and sources.) By the Kamakura period (1185–1333), the work languished in obscurity such that very few people had access to the text, particularly that of

3074-475: Was developed by Yoshitoki Takahashi in 1798, which took into account the elliptical orbits of the sun and moon. His student Tadataka Ino and he completed the first comprehensive modern map of Japan in 1821. The office of chief astronomer was officially hereditary, but often, outstanding astronomers were adopted, making it meritocratic in practice. After the Meiji Restoration , it became one of

3132-455: Was later executed for treason after the death of Tenmu. Tenmu's foreign policy favored the Korean kingdom Silla , which took over the entire Korean peninsula in 676. After the unification of Korea by Silla, Tenmu decided to break diplomatic relations with the Tang dynasty of China, evidently in order to keep on good terms with Silla. Tenmu used religious structures to increase the authority of

3190-512: Was not a good idea for him to ascend to the throne, yet Tenji was obsessed with the idea. In 671 Tenmu felt himself to be in danger and volunteered to resign the office of crown prince to become a monk. He moved to the mountains in Yoshino, Yamato Province (now Yoshino, Nara ), officially for reasons of seclusion. He took with him his sons and one of his wives, Princess Unonosarara, a daughter of Tenji. However, he left all his other consorts at

3248-505: Was not expected to gain the throne, because his brother Tenji was the crown prince, being the older son of their mother, the reigning empress. During the Tenji period , Tenmu was appointed his crown prince. This was because Tenji had no appropriate heir among his sons at that time, as none of their mothers was of a rank high enough to give the necessary political support. Tenji was suspicious that Tenmu might be so ambitious as to attempt to take

3306-667: Was organized; (2) the defenses of the Inner Country near the Capital were strengthened; (3) forts and castles were built near Capital and in the western parts of Honshū—and in Kyushu; (4) troops were reviewed; and all provincial governors were ordered to complete the collection of arms and to study tactics. In 673 Tenmu moved the capital back to Yamato on the Kiymihara plain, naming his new capital Asuka. The Man'yōshū includes

3364-447: Was proclaimed in the final months of the emperor's life; and Shuchō ended with Tenmu's death. The early years of Tenmu's reign are not linked by scholars to any era or nengō . The Taika era innovation of naming time periods – nengō – was discontinued during these years, but it was reestablished briefly in 686. The use of nengō languished yet again after Tenmu's death until Emperor Monmu reasserted an imperial right by proclaiming

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