Surya Siddhanta in English rhyme
Surya Siddhanta in English rhyme
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Key Characteristics
Mythological Origin: Traditionally, the text is said to have been revealed by the Sun God (Surya) to Maya Asura in the city of Romaka at the end of the Satya Yuga.
Scientific Content: It includes sophisticated mathematical concepts, such as the roots of trigonometry (specifically sine and cosine functions) and early descriptions of gravity.
Cosmology & Time: The text uses a geocentric model and defines massive time cycles called Yugas (or Mahayugas) to calculate the long-term orbits of planets.
Legacy & Influence: It was highly also influential in medieval Islamic geography and was one of the first Indian astronomical texts translated into Arabic and later into English by scholars like Ebenezer Burgess.
Notable Observations and Calculations
Tropical Year: Estimated at 365.2421756 days, which is remarkably close to modern scientific measurements.
Sine Tables: One of the world's earliest tables for the sine function, calculated for every 3.75 degree of arc.
Planetary Motion: The motion of planets providing orbital parameters based on the number of revolutions per Mahayuga.
Spherical Earth: Describes Earth as a sphere (Bhu-gol) and discusses gravity before European theories.
Sample:
Chapter 01 Mean Motions
अध्यायः ०१ मध्यमाधिकारः
अचिन्त्याव्यक्तरूपाय निर्गुणाय गुणात्मने।
समस्तजगदाधारमूर्तये ब्रह्मणे नमः ॥१.१॥
To the Form unseen, beyond decree,
To the source of traits, yet traitless free,
To Brahman, base of worlds that be,
I bow with reverent harmony. [1.1]
अल्पावशिष्टे तु कृते मयो नाम महासुरः।
रहस्यम् परमम् पुण्यम् जिज्ञासुर् ज्ञानम् उत्तमम् ॥१.२॥
When Krita waned in twilight sea,
Mayasur sought the mystery,
The purest lore, the highest key,
To know the truth eternally. [1.2]
वेदाङ्गम् अग्र्यम् अखिलम् ज्योतिषाम् गतिकारणम्।
आराधयन् विवस्वन्तम् तपस् तेपे सुदुश्चरम् ॥१.३॥
The foremost limb of Veda’s plea,
The cause of motion, astrology,
He worshipped Surya fervently,
With penance hard, austerity. [1.3]
तोषितस् तपसा तेन प्रीतस् तस्मै वरार्थिने।
ग्रहाणाम् चरितम् प्रादान् मयाय सविता स्वयम् ॥१.४॥
By penance vast the Sun did see,
The seeker’s heart in purity,
He gave the course of planets free,
Bestowed their paths eternally. [1.4]
विदितस् ते मया भावस् तोषितस् तपसा ह्य् अहम्।
दद्याम् कालाश्रयम् ज्ञानम् ग्रहाणाम् चरितम् महत् ॥१.५॥
Thy heart is known, appeased by me,
Through penance deep and constancy,
I grant the lore of time’s decree,
The planets’ course, their majesty. [1.5]
न मे तेजःसहः कश्चिद् आख्यातुम् नास्ति मे क्षणः।
मदम्शः पुरुषो +अयम् ते निःशेषम् कथयिष्यति ॥१.६॥
None bears my blaze eternally,
Nor time permits my clarity,
Yet part of me, this man shall be,
And tell thee all in verity. [1.6]
इत्य् उक्त्वान्तर्दधे देवः समादिश्याम्शम् आत्मनः।
स पुमान् मयम् आहेदम् प्रणतम् प्राञ्जलिस्थितम् ॥१.७॥
Thus spoke the Deva, vanished free,
Commanding forth his energy,
That man approached with folded plea,
Mayasur bowed devotedly. [1.7]
शृणुष्वैकमनाः पूर्वम् यद् उक्तम् ज्ञानम् उत्तमम्।
युगे युगे महर्षीणाम् स्वयम् एव विवस्वता ॥१.८॥
Attend with mind in unity,
The lore declared in purity,
By Surya’s voice through every spree,
To sages vast in history. [1.8]
शास्त्रम् आद्यम् तद् एवेदम् यत् पूर्वम् प्राह भास्करः।
युगानाम् परिवर्तेन कालभेदो +अत्र केवलः ॥१.९॥
This primal text the Sun did weave,
As ages turn, distinctions leave,
The change of time alone conceive,
No other shift the lore shall grieve. [1.9]
लोकानाम् अन्तकृत् कालः कालो +अन्यः कलनात्मकः।
स द्विधा स्थूलसूक्ष्मत्वान् मूर्तश् चामूर्त उच्यते ॥१.१०॥
Time ends the worlds, their destiny,
Another counts their measure free,
Twofold he stands in subtlety,
Embodied yet immaterially. [1.10]
प्राणादिः कथितो मूर्तस् त्रुट्याद्यो +अमूर्तसम्ज्ञकः।
षड्भिः प्राणैर् विनाडी स्यात् तत्षष्ट्या नाडिका स्मृता ॥१.११॥
Breath marks the gross reality,
A moment small the subtle key,
Six breaths define a vinadi,
By sixty counts a nadika be. [1.11]
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