A rare late-18th century George Adams Junior combined planetarium and tellurian that sold at Bonhams includes a reference to the ‘Georgian Planet’ engraved on the top plate. Today that planet is better known as Uranus, which was first observed by William Herschel on March 13, 1781, although he initially recorded it as a comet.
The object was later universally accepted as a new planet and
Herschel named it Georgium Sidus (George's
Star), or the 'Georgian Planet', in honour of his new patron, King
George III. Although this was a popular name, astronomers preferred
to follow the historical precedent of naming planets after ancient
Greek and Roman gods - Uranus was the father of Saturn.
The planetarium and tellurian, which was offered in the
scientific, technological and mechanical musical instruments sale
at Bonhams Knightsbridge on May 20, has the brass drum with winding
aperture at the side mounted on top with circular plate, with
racked circumference and engraved with calendar, degree and zodiac
scales together with astronomical data.
It is signed G ADAMS, Mathematical Instrument Maker TO HIS
Majesty Fleet Strt. LONDON. It also has engraved details of
comets and planets: This Comet appeared in the year 1661. This
Comet appeared in 1682 and again in 1758 its Period is 75 1/2
Years. This most Remarkable Comet appeared in the Year 1680 its
Period is 575 Years. Orbit of the new Georgian Planet, its Period
is 32850 Days.
The drum is 8½in (21.5cm) diameter and the overall height is
On the day, it went well beyond an estimate of £30,000-40,000 to
sell for £95,000.
Meanwhile, a 5in (13cm) Gregorian reflecting telescope on stand,
English, late 18th century, unsigned but attributed to Dollond,
sold for a low-estimate £18,000 at Bonhams.
Engraved with the monogram BD surmounted by a
falcon with spurs, it is in the original heavily brass-mounted oak
case made for long distance travel, the tube measuring 2ft 1in
The buyer's premium was 20%.
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