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Herschel10521

From:
John R. Hind
To:
Sir John Herschel
Date:
[12 October 1870]
Source of text:
RS:HS 9.398
Summary:

Has calculated the ecliptic of Thucydides. Comments on this and the reading given by E. W. Hartwig. Regarding the 7 eclipses of the sun during the past 30 years. G. Bishop's assistant (W. Plummer) is investigating the orbit of the great comet of 1861. Nautical Almanac for 1874 delayed due to extra work on the transit of Venus.

Contributor:
John Herschel Project

Herschel10522

From:
John R. Hind
To:
Sir John Herschel
Date:
[9 February 1871]
Source of text:
RS:HS 9.399
Summary:

Forgot to call his attention to the column regarding the Julian period in the Nautical Almanac. Something strange about the neighborhood of R. Leporis. He has no doubt seen the table of Julian dates in the Connaissance des temps.

Contributor:
John Herschel Project

Herschel10523

From:
John R. Hind
To:
Sir John Herschel
Date:
[28 February 1871]
Source of text:
RS:HS 9.400
Summary:

Sends calculation of the Transits of Venus in 2004 and 2012. Cannot find any record of new double stars. Is in doubt about R. Leporis. Quotes an historical incident regarding an eclipse of the sun and the removal of Mahomet's pulpit. Did F. X. von Zach make his calculations himself?

Contributor:
John Herschel Project

Herschel12788

From:
Sir John Herschel
To:
John R. Hind
Date:
[6 October 1845]
Source of text:
TxU:H/L-0192; Reel 1054
Summary:

Rejoices that RH is studying orbit of Mu2 Bootis. Suggests way to simplify calculations. Compares orbits for Gamma Virginis calculated by various observers. Notice of systematic errors.

Contributor:
John Herschel Project

Herschel7506

From:
John R. Hind
To:
Sir John Herschel
Date:
[9 August 1847]
Source of text:
RAS:JH Archive 10/5.23; Reel 9
Summary:

Gratitude for Cape Results. Special comments on JH's 'method of sequences' and cometary theory. Refers to article on Halley's Comet in Astronomische Nachrichten. Reports observations of Saturn's satellites and orbit of Gamma Virginis.

Contributor:
John Herschel Project

Herschel7687

From:
John R. Hind
To:
Sir John Herschel
Date:
[12 May 1852]
Source of text:
RAS:JH Archive 12/1.6.2; Reel 10
Summary:

Annibal de Gasparis's new planet Psyche. Alexander von Humboldt selected its name. Other new planet, found by [C. Robert] Luther, was named Thetis by F. W. A. Argelander. Detected new nebula on 26 Apr. Nervous trouble interrupting Hind's search for planets.

Contributor:
John Herschel Project

Herschel7688

From:
John R. Hind
To:
Sir John Herschel
Date:
[7 February 1862]
Source of text:
RAS:JH Archive 12/1.6.3; Reel 10
Summary:

Glad that JH approves introducing Julian dates. Notes their use in American lunar tables. Positions of three new nebulae.

Contributor:
John Herschel Project

Herschel7689

From:
John R. Hind
To:
Sir John Herschel
Date:
[27 May 1862]
Source of text:
RAS:JH Archive 12/1.6.4; Reel 10
Summary:

[Jean] Chacornac found nebula in Coma Berenices that JH thought had disappeared. It is highly variable. Notes on nebulae of variable magnitude.

Contributor:
John Herschel Project

Herschel7690

From:
John R. Hind
To:
Sir John Herschel
Date:
[2 August 1862]
Source of text:
RAS:JH Archive 12/1.6.5; Reel 10
Summary:

Positions of new comet, calculated from 'Florence observations.'

Contributor:
John Herschel Project

Herschel7691

From:
John R. Hind
To:
Sir John Herschel
Date:
[4 November 1862]
Source of text:
RAS:JH Archive 12/1.6.6; Reel 10
Summary:

Compares positions for variable nebula in Taurus reported by several astronomers. Plans to incorporate JH's suggestion regarding Julian calendar into more convenient table of dates.

Contributor:
John Herschel Project

Herschel7692

From:
John R. Hind
To:
Sir John Herschel
Date:
[8 December 1862]
Source of text:
RAS:JH Archive 12/1.6.7; Reel 10
Summary:

E. W. L. Tempel's 1860 discovery of nebula near Merope.

Contributor:
John Herschel Project

Herschel7762

From:
John R. Hind
To:
Sir John Herschel
Date:
[23 June 1854]
Source of text:
RAS:JH Archive 14/3.18; Reel 11
Summary:

Computation of Alpha Centauri's angle and distance, derived with JH's 'graphical method.' Compares this with results by other astronomers.

Contributor:
John Herschel Project

Herschel8937

From:
Sir John Herschel
To:
John R. Hind
Date:
[4 April 1862]
Source of text:
TxU:H/L-0193; Reel 1054
Summary:

Reports the disappearance of a nebula seen by William Herschel in Coma Berenices, but which H. L. d'Arrest did not locate in 1850.

Contributor:
John Herschel Project
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