Hodgson, James, 1672 - 1755 (mathematician)
Found in 21 Collections and/or Records:
A untitled book of calculations and tables, 182 folios, including three sets of lunar calculations (1r-78r), related tables (86r-103v), and planetary calculations (158v-181v). Most of the volume is in Flamsteed's hand, although some of the tables are by James Hodgson. The lunar work is dated 16 April 1699 - 16 April 1700. The remaining material is dated up to circa 30 January 1711.
Calculations relating to Jupiter's satellites, continued from RGO 1/48C. The writing is probably in James Hodgson's hand, with notes in Flamsteed's hand at the beginning and end. The contents are undated, but refer to 1700-1706.
'Catalogus Fixarum', containing (zodiacal) star positions (54v-73v), with 'Variationum Tabula proportionalis ad Annos 20' ('A proportional table of variations for 20 years') (74v-75v) and 'Ad Explorandum Instrumenti errorculos' ('For exploring the small errors of the Instrument') (75v-76r), 26 folios. The writing is mainly in James Hodgson's hand, with an introduction and additions by Flamsteed.
'Diarium Observationum Astronomicarum Coelestium' ('Journal of astronomical observations of the heavens'): first notes of observations with the mural arc, 18 January 1694 - 16 March 1698, mainly in the hands of the assistants Samuel Clowes and James Hodgson, though Flamsteed's also appears, 180 folios. There are entries noting visits by Peter the Great (160r, 164v) and other national and personal events (e.g. 24r, 39r, 176r). Inside the back cover is a signed statement by Isaac Newton.
'Diarium Observationum Coelestium' ('Journal of observations of the heavens'): first notes of observations with the mural arc, 18 March 1698 - 17 November 1702, with notes to 7 June 1708, mainly in Hodgson's hand, although Flamsteed and Thomas Weston's also appear, 187 folios. The volume includes notes about early letters (2v) and on magnetic variation (47v-48r), and tables of errors of the mural arc (180v-182v).
Lunar tables, with calculations from lunar data of 1694-1695 and notes on Jeremiah Horrocks's lunar theory. There are also tables of right ascensions and polar distances for inscribing lines of latitude and longitude on charts of the constellations. The tables are not in Flamsteed's hand, but possibly that of James Hodgson. The contents date from 1701-1708, with the exception of the notes, which are later.
'Apographa' ('Exact copies'), second part: 'Observationes Coelestes' made between January 1694 and December 1703, with collected data from various sources and notes up to at least 1709, 185 folios. The volume includes work on instrument errors (2v-3r, 23r); observations of Mars compared with the Rudolphine Tables (172v-173r); and Flamsteed's 'Account of my Ancestors' (185v). The writing is mainly in James Hodgson's hand, but that of Thomas Weston also appears.
'Zodiacus Britannicus', a compilation concerning the fixed stars, including a copy of observations made with the mural arc between November 1689 and April 1704, with related calculations and deduced places, 226 folios. Zodiacal constellations appear first (4v-87v), followed by others, often incomplete (88r-221v), and a table of the equation of time (224r). The volume was compiled by Flamsteed and John Hodgson, probably during 1695-1701, with additions up to 1719.
Lunar, planetary and stellar calculations and tables compiled from around 1694 onwards using data of 1689-1715, 185 folios (foliated continuously). The volumes are in various hands, including Flamsteed's and James Hodgson's.
Observations and calculations relating mainly to the fixed stars, 245 folios (foliated continuously). The writing is in the hands of Flamsteed and James Hodgson.
Observations in the hands of James Hodgson and Joseph Crosthwait.
Stellar, lunar and planetary observations and calculations, 307 folios (foliated continuously). Much of the text is in James Hodgson's hand, although Flamsteed's handwriting also features.
Catalogues of the fixed stars and related material, in the hands of Flamsteed and James Hodgson, 171 folios. The front board is dated 1694, and the main sections were compiled in 1699, 1709 and 1696-1697, with an added note dated November 1712. The volume includes a copy of Flamsteed's 1686 catalogue of 130 principal fixed stars (129v-130v).
'Mr Lee's [Luke Leigh] Calculations' of stellar positions and stellar calculations, with a few notes, 139 folios (foliated continuously). The writing is in various hands, including those of Flamsteed and James Hodgson.
Three notebooks and three loose sheets of stellar positions, mostly undated, in the hands of Flamsteed, James Hodgson and Joseph Crosthwait, 92 folios (foliated continuously).
'Tabulae Astronomicae Subsidiariae utilissim[ae]' ('Most useful subsidiary astronomical tables') for the calculation of celestial coordinates, 21 folios. There are diagrams (8r) and a prefixed section entitled 'Distantiae Eclipticae a Polo ad gradum quemlibet Ascentionis Rectae' ('Ecliptic distances from the pole for whatever degree of right ascension'). The contents are dated 1694-1695, but there may be later additions. The writing is in the hands of Flamsteed, James Hodgson and others.