| 词条 | Haridatta |
| 释义 |
| name = Haridatta | image = | image_size = | alt = | caption = | birth_name = | birth_date = ca.650 CE | birth_place = | death_date = | death_place = | body_discovered = | death_cause = | resting_place = | resting_place_coordinates = | residence = Thirunnavaya, Kerala | nationality = Indian | ethnicity = | citizenship = | other_names = | known_for = Promulgation of the Parahita system of astronomical computations | education = | alma_mater = | employer = | notable works = Grahacaranibandhana | occupation = Astronomer-astrologer | years_active = | home_town = | salary = | networth = | height = | weight = | title = | term = | predecessor = | successor = | party = | opponents = | boards = | spouse = | partner = | children = | parents = | relations = | callsign = | awards = | signature = | signature_alt = | website = | footnotes =Promulgated the Parahita system of astronomical computations in 683 CE at Thirunnavaya. | box_width = | misc = }} Haridatta (c. 683 CE) was an astronomer-mathematician of Kerala, India, who is believed to be the promulgator of the Parahita system of astronomical computations. This system of computations is widely popular in Kerala and Tamil Nadu. According to legends, Haridatta promulgated the Parahita system on the occasion of the Mamankam held in the year 683 CE.[1] Mamankam was a 12-yearly festival held in Thirunnavaya on the banks of the Bharathapuzha river. The distinctive contribution of Harfidatta, apart from his resolving the Aryabhatiya calculations and using the Katapayadi system of numerals is the corrections he introduced to the values of the mean and true positions, the velocity, etc., of the moon and other planets as obtained from Aryabhata's constants. This correction is called the Sakabda-samskara since it applied from the date of Aryabhata in the Saka era 444, at which date his constants gave accurate results.[2] Parahita systemThe Parahita system of computations introduced by Haridatta was a simplification of the system propounded in Aryabhatiya by Aryabhata. Haridatta introduced the following simplifications.[1][3] The system was called Parahita meaning suitable for the common man because it simplified astronomical computations and made it accessible for practice even for ordinary persons.
Works of HaridattaScholars have been able to identify only two works as authored by Haridatta. One of them, titled Grahacaranibandhana, is the basic manual of computations of the Parahita system of astronomy. This was unearthed by K.V. Sarma and was published in 1954.[4] The other work titled Mahamarganibandhana is no longer extant. See also
References1. ^1 K. V. Sarma (1997), "Haridatta", Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures, edited by Helaine Selin, Springer, {{ISBN|978-1-4020-4559-2}}. {{Indian mathematics}}{{Scientific Research in Kerala |state=collapsed}}{{authority control}}2. ^{{cite journal|last=K. Chandra Hari|date=2002|title=Date of Haridatta, promulgator of the Parahita system of astronomy in Kerala|journal=Indian Journal of History of Science|volume=37|issue=3|pages=223–236}} 3. ^{{cite book|last=K.V. Sarma|title=A History of the Kerala School of Hindu Astronomy|publisher=Vishveshwaranand Institute|location=Hoshiarpur|date=1972|pages=7–9|chapter=Parahita system of astronomy}} 4. ^{{cite book|last=K.V. Sarma|title=Grahacaranibandhana: A Parahita manual by Haridatta|publisher=Kuppuswamy Research Foundation|location=Madras|date=1954}} 8 : Hindu astronomy|History of mathematics|Kerala school|People from Malappuram district|Scientists from Kerala|7th-century Indian mathematicians|7th-century Indian astronomers|Scholars from Kerala |
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