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Villarceau, [A. J. F.] Yvon in correspondent 
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Herschel13606

From:
[A. J. F.] Yvon Villarceau
To:
Sir John Herschel
Date:
[1 April 1849]
Source of text:
RS:HS 17.418
Summary:

Asks for JH's comments on YV's specific double star observations. YV presents the mathematical method he uses to calculate double star orbits, which he had presented to the Paris Académie in 1847, but it was not published.

Contributor:
John Herschel Project

Herschel13607

From:
Sir John Herschel
To:
[A. J. F.] Yvon Villarceau
Date:
[19 April 1849]
Source of text:
RS:HS 17.418a
Summary:

Has passed YV's memoirs on the calculation of orbits on to G. B. Airy for publication; copies will be sent [see YV's 1849-4-1]. Notes that YV's methods are similar to those of U. J. J. Leverrier.

Contributor:
John Herschel Project
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