Korean Historical Records on Halley's Comet Revisited

Lee, Ki-Won; Mihn, Byeong-Hee; Ahn, Young Sook

doi:10.5140/jass.2014.31.3.215

Cited by 4 publications

(2 citation statements)

References 16 publications

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“…(iii) Strangely, there are no records of the Halley's comet. The same is the case for the records of the Sagi, which cover approximately 970 years (Lee et al 2014). In contrast, interesting records include observations for the years 302 and 315.…”

Section: Cometmentioning

confidence: 61%

Astronomical Records in the Goguri Annal of the Three Kingdoms Period

Lee,

Mihn

2024

J. Astron. Space Sci.

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It is known that Chang-Hwa Park (1889–1962) transcribed a chronicle of the Goguryeo kingdom (BC 37–AD 668) of Korea (hereafter Goguri annal) from literature of the time that is no longer available. However, the authenticity of his transcription remains disputed. This study attempts to verify whether the Goguri annal is a pseudograph by analyzing the astronomical records in the annal. Although the Goguryeo kingdom fell in the year 668, the Goguri annal contains records up to the year 536. In this study, we have classified the astronomical records into eight categories and clustered them into two groups: a calendrical data group of reign-name and calendar date categories, and a celestial phenomena group of solar eclipse, trespass, comet, daylight appearance of Venus, meteor/meteorite, and other categories. The records of each category have been compared with those of the Samguksagi (History of the Three Kingdoms), Chinese chronicles, and with the results of modern computations wherever possible. From this comparison, we have not found any critical record that would indicate that the Goguri annal is a pseudograph, although the same astronomical records, with the exception of a few, are also found in the Samguksagi and Chinese chronicles.

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Section: Cometmentioning

confidence: 61%

Astronomical Records in the Goguri Annal of the Three Kingdoms Period

Lee,

Mihn

2024

J. Astron. Space Sci.

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“…Therefore, if this account is true, it is valuable to validate another account of the Goryeosa of 1222, September 9: a comet was seen during the day. According to the work of Kronk (1999), this comet was Halley, in its 1222 apparition (see also Lee et al 2014). One of most interesting accounts is that of 1147, July 31 (No.…”

Section: Goryeosa Accountsmentioning

confidence: 99%

Daylight Observations of Venus with Naked Eye in the Goryeosa

Lee¹

2017

Journal of Astronomy and Space Sciences

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In this paper, we investigate the observations of Venus in daytime that are recorded in the Goryeosa (History of the Goryeo Dynasty, A.D. 918-1392). There are a total of 167 accounts of such observations in this historical book, spanning a period of 378 yr (from 1014 to 1392). These include six accounts where the days of the observation are not specified and two accounts where the phase angles are outside the calculation range of the equation used in our study. We analyze the number distribution of 164 accounts in 16 yr intervals covering the period from 1023 to 1391. We find that this distribution shows its minimum at around 1232, when the Goryeo dynasty moved the capital to the Ganghwa Island because of the Mongol invasion, and its maximum at around 1390, about the time when the dynasty fell. In addition, we calculate the azimuth, altitude, solar elongation, and apparent magnitude of Venus at sunset for 159 observations, excluding the eight accounts mentioned above, using the DE 406 ephemeris and modern astronomical algorithms. We find that the average elongation and magnitude of Venus on the days of those accounts were ~40° and -4.5, respectively, whereas the minimum magnitude was -3.8. The results of this study are useful for estimating the practical conditions for observing Venus in daylight with the naked eye and they also provide additional insight into the corresponding historical accounts contained in the Goryeosa.

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