Pañcasiddhāntikā

What this text is

Varāhamihira’s summary of the five astronomical schools of his day — the only window into the older Sūrya Siddhānta.

Summaries of the Paitāmaha, Vāsiṣṭha, Romaka, Pauliśa and Saura siddhāntas, whose original texts are lost.

Its role in this app

Documentary base for the Sūrya Siddhānta’s layered history and the gaṇita lineage narrative.

Editions our research holds

• neugebauer-pingree-vol-1

  Neugebauer & Pingree vol. 1 (1970) — clean translation layer.

  in copyright — read for verification only, never republished · scan quality: good

• thibaut-dvivedi-1889

  Labeled as Thibaut & Dvivedī 1889 — actually a mislabeled Arabic tafsīr; see findings.

  copyright status unclear — treated as in-copyright · scan quality: unusable

What our reading found

Findings from this project's own verification passes — recorded because a source's defects are part of citing it honestly.

The file labeled Thibaut-Dvivedī 1889 is a mislabeled Arabic Quran commentary (Al-Manār) — wrong book entirely. The corpus catalog’s claim that Thibaut-Dvivedī covers the missing Neugebauer-Pingree vol. 2 is void; the real edition needs re-sourcing.