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Herschel, John in addressee 
letter in document-type 
1840-1849::1847::04 in date 
Smyth, William Henry in author 
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From:
William Henry Smyth
To:
Sir John Herschel
Date:
[17 April 1847]
Source of text:
RS:HS 16.295
Summary:

Studies two possible orbits of Gamma Virginis; sends complete descriptions of both, including calculation of the apparent and actual ellipse. The first orbit combines the data of other astronomers.

Contributor:
John Herschel Project
From:
William Henry Smyth
To:
Sir John Herschel
Date:
[21 April 1847]
Source of text:
RS:HS 16.296
Summary:

Sends angular results from various astronomers using similar epoches.

Contributor:
John Herschel Project