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Globus Aerostaticus

The Hot Air Balloon

Globus Aerostaticus is a now obsolete constellation in the southern hemisphere, created in 1798 by Jérôme Lalande.

Between 1791 and 1801, French astronomer Jérôme Lefrançois de Lalande put together a star catalogue containing 47,390 stars. As part of it, he designed four new constellations.
In 1751, Lalande had cooperated with fellow French astronomer Nicolas-Louis de Lacaille in measurements of the Lunar Parallax (Lalande from Berlin, Germany and de Lacaille from the Cape of Good Hope in South Africa).

During his time at the Table Mount, de Lacaille had designed fourteen new constellations in the southern hemisphere, thirteen of them being named after scientific instruments and artist's tools, symbolizing the Age of Enlightenment.

These creations inspired Lalande to design a constellation of his own, commemorating the - in his words, "greatest discovery of the French" - the hot air balloon invented by the Montgolfier brothers in 1782.
Globus Aerostaticus in Uranographia
Source: Astronomy Facts
First flight of the hot air balloon
June 4, 1783; Wikipedia

In 1798, Lalande met German astronomer Johann Elert Bode at a conference in Gotha, Germany and discussed the creation of new constellations, commemorating epoch making German and French inventions.

The result were two proposals, Bode's Officina Typographica, the Printing Office, commemorating the invention of Johannes Gutenberg's printing press in 1439 and Lalande's Globus Aerostaticus.

According to SkyEye Globus Aerostaticus "floats unseen through the skies near Piscis Austrinis and Capricornus", consisting of the faint stars 3, 6, 7 and 8 Piscis Austrini.

In 1801, inBode's Uranographia, the constellation was shown under its Latin name on Plate XVI.

In 1827, in Urania's Mirror, it appeared under its French name Ballon Aerostatique on Plate XXVI.

In 1928, when the IAU did not include Lalande's creations in their list of 88 official constellations, the stars were "returned" to the constellation Piscis Austrini.

Sources: Wikipedia, Ian Ridpath, SkyEye, John C. Barentine: The Lost Constellations, Richard Hinckley Allen,
The Philosophical Magazine, Vol III, p. 384

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