Search: Herschel, John in correspondent 
letter in document-type 
1840-1849::1843 in date 
Smyth, William Henry in addressee 
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Herschel4406

From:
Sir John Herschel
To:
William Henry Smyth
Date:
[10 June 1843]
Source of text:
RS:HS 22.156
Summary:

Will review all Gamma Virginis observations before revising orbit. Catalogue of major nebulae complete; will work on minor nebulae next.

Contributor:
John Herschel Project

Herschel4275

From:
Sir John Herschel
To:
William Henry Smyth
Date:
[16 June 1843]
Source of text:
RS:HS 22.157
Summary:

Sends JH's 1817 observations; cannot locate any he made in 1811. Tells WS Gamma Virginis measurements will take more time.

Contributor:
John Herschel Project

Herschel4254

From:
Sir John Herschel
To:
William Henry Smyth
Date:
[29 June 1843]
Source of text:
RS:HS 22.160
Summary:

Reaches conclusion about Gamma Virginis. States in regard to shape of orbit, 'We are all wrong.' Believes the orbit is less than 150 years. Claims that many errors exist in British measurements made between 1829 and 1834.

Contributor:
John Herschel Project

Herschel4265

From:
Sir John Herschel
To:
William Henry Smyth
Date:
[9 July 1843]
Source of text:
RS:HS 22.161
Summary:

Sends calculations of Gamma Virginis and determines its eccentricity. Believes the orbit is highly elongated, like that of a comet.

Contributor:
John Herschel Project

Herschel4246

From:
Sir John Herschel
To:
William Henry Smyth
Date:
[18 July 1843]
Source of text:
RS:HS 22.163
Summary:

Devises and suggests mode of micrometric measurement of angles.

Contributor:
John Herschel Project

Herschel4490

From:
Sir John Herschel
To:
William Henry Smyth
Date:
[8 September 1843]
Source of text:
RS:HS 22.167
Summary:

Offers condolences to Ann Smyth. WS's calculation of Gamma Virginis orbit surprises JH. Concerned about accurate methods of calculation. Remarks on excavation of Chelsea mammoth.

Contributor:
John Herschel Project

Herschel4344

From:
Sir John Herschel
To:
William Henry Smyth
Date:
[21 November 1843]
Source of text:
RS:HS 22.170
Summary:

Sends diagram of the 'little sweeper,' which is now at Hanover with 94-year-old Caroline Herschel.

Contributor:
John Herschel Project
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