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The Obliquity of the Ecliptic, 1807

 File
Reference Code: GBR/0180/RGO 4/180

Scope and Contents

'Of the Obliquity of the Ecliptic', a memoir by Guiseppe Piazzi, translated by Margaret Maskelyne in 1807 from Piazzi's 'Dell' Obliquita dell' eclittica'.

1. Zenith distance of the Sun by the satellites observed at Palermo, 1794-1803.

2. Obliquity of the ecliptic reduced from arithmetical observations, 1791-1803.

3. Obliquity of the ecliptic reduced from the Greenwich observations by Maskelyne, 1790-1799.

4. Difference of the obliquity of the summer and winter solstices.

5. The solstices at Palermo and Greenwich compared together.

6. Correction for the nutation depending on the perihelion of the Moon.

7. Mean obliquity of the ecliptic for 1800.

8. Annual decrease of the obliquity of the ecliptic.

9. 'Value of the nutation of the axis of the Earth passing the lunar node with a retrogate motion from the first of Libra to the first of Aries.'

10. Supplement to Piazzi's memoirs of the obliquity of the ecliptic, taking the observations up to 1804.



















Dates

  • Creation: 1807

Creator

Conditions Governing Access

From the Management Group:

Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).

Extent

1 envelope(s) (1 envelope)

Language of Materials

English

Former / Other Reference

A2/421G

Finding aid date

2005-11-07 10:57:55+00:00

Includes index.

Geographic

Repository Details

Part of the Cambridge University Library Repository

Contact:
Cambridge University Library
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Cambridge CB3 9DR United Kingdom