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Haridatta

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.

Haridatta
Bornca.650 CE
NationalityIndian
OccupationAstronomer-astrologer
Known forPromulgation of the Parahita system of astronomical computations
Notable workGrahacaranibandhana
Notes
Promulgated the Parahita system of astronomical computations in 683 CE at Thirunnavaya.

The distinctive contribution of Haridatta, 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 system edit

The 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.

  • Haridatta dispensed with the numerical symbolism used by Aryabhata and replaced it with the more flexible Katapayadi system. In this system, letters are used to represent digits and these letters are then used to invent meaningful words and sentences to denote specific numbers. These words and sentences could be remembered with much less effort.
  • Computations in Indian astronomy involved long numbers representing various parameters associated with the several celestial objects which are applicable for a Mahayuga, a period of 4,320,000 years. To avoid computations with these large numbers, Haridatta introduced a smaller Yuga, called a Dhijagannupura-yuga, of 576 years or 210,389 days (which 1/7500 th part of a Mahyuga) and accurately determined the zero corrections for this sub-Yuga for the mean motion of the several planets. These corrections were then used to compute the mean planets for any given date.

Works of Haridatta edit

Scholars 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 edit

References edit

  1. ^ a b 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.
  2. ^ K. Chandra Hari (2002). "Date of Haridatta, promulgator of the Parahita system of astronomy in Kerala". Indian Journal of History of Science. 37 (3): 223–236.
  3. ^ K.V. Sarma (1972). "Parahita system of astronomy". A History of the Kerala School of Hindu Astronomy. Hoshiarpur: Vishveshwaranand Institute. pp. 7–9.
  4. ^ K.V. Sarma (1954). Grahacaranibandhana: A Parahita manual by Haridatta. Madras: Kuppuswamy Research Foundation.

haridatta, 17th, century, astronomer, astronomer, mathematician, kerala, india, believed, promulgator, parahita, system, astronomical, computations, this, system, computations, widely, popular, kerala, tamil, nadu, according, legends, promulgated, parahita, sy. For the 17th century astronomer see Haridatta II 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 HaridattaBornca 650 CENationalityIndianOccupationAstronomer astrologerKnown forPromulgation of the Parahita system of astronomical computationsNotable workGrahacaranibandhanaNotesPromulgated the Parahita system of astronomical computations in 683 CE at Thirunnavaya The distinctive contribution of Haridatta 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 Contents 1 Parahita system 2 Works of Haridatta 3 See also 4 ReferencesParahita system editThe 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 Haridatta dispensed with the numerical symbolism used by Aryabhata and replaced it with the more flexible Katapayadi system In this system letters are used to represent digits and these letters are then used to invent meaningful words and sentences to denote specific numbers These words and sentences could be remembered with much less effort Computations in Indian astronomy involved long numbers representing various parameters associated with the several celestial objects which are applicable for a Mahayuga a period of 4 320 000 years To avoid computations with these large numbers Haridatta introduced a smaller Yuga called a Dhijagannupura yuga of 576 years or 210 389 days which 1 7500 th part of a Mahyuga and accurately determined the zero corrections for this sub Yuga for the mean motion of the several planets These corrections were then used to compute the mean planets for any given date Works of Haridatta editScholars 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 editIndian astronomy Indian mathematics Indian mathematicians History of mathematics List of astronomers and mathematicians of the Kerala schoolReferences edit a b 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 K Chandra Hari 2002 Date of Haridatta promulgator of the Parahita system of astronomy in Kerala Indian Journal of History of Science 37 3 223 236 K V Sarma 1972 Parahita system of astronomy A History of the Kerala School of Hindu Astronomy Hoshiarpur Vishveshwaranand Institute pp 7 9 K V Sarma 1954 Grahacaranibandhana A Parahita manual by Haridatta Madras Kuppuswamy Research Foundation Retrieved from https en wikipedia org w index php title Haridatta amp oldid 1191592446, wikipedia, wiki, book, books, library,

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