Unpublished paper, 'An account of observations taken at the observatory near Fort Saint George in the East Indies for determining the obliquity of ecliptic in the months of December 1809, and June and December 1810' by Captain John Warren
Reference number: AP/7/14
Date: 01 February 1811
Description
Warren details observations used to determine the obliquity of the ecliptic at Fort St George [Chennai, Tamil Nadu, India]. He describes the instruments used to take the observations and explains difficulties experienced in using these instruments in tropical climates. He then provides specific observations and calculations.
Minor graphite annotations appear.
Subject: Astronomy
Written by Warren at the Honorable Company's Observatory [Chennai].
- Reference number
- AP/7/14
- Earliest possible date
- 01 February 1811
- Physical description
- Ink on paper
- Page extent
- 20 pages
- Format
- Manuscript
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Citation
Unpublished paper, 'An account of observations taken at the observatory near Fort Saint George in the East Indies for determining the obliquity of ecliptic in the months of December 1809, and June and December 1810' by Captain John Warren, 01 February 1811, AP/7/14, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/ap_7_14/unpublished-paper-an-account-of-observations-taken-at-the-observatory-near-fort-saint-george-in-the-east-indies-for-determining-the-obliquity-of-ecliptic-in-the-months-of-december-1809-and-june-and-december-1810-by-captain-john-warren, accessed on 08 May 2026
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Archived papers: volume 7, scientific papers submitted the Royal Society unpublished or abstracted, 1787-1811
1787-1811 Reference number: AP/7
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Archived Papers
The 'Archived Papers' collection is comprised of original manuscript scientific papers and letters submitted to the Royal Society which remained unpublished or were abstracted in the journal 'Proceedings of the Royal Society' published from 1830 onwards.
Dates: 1768 - 1989
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