Globus Aerostaticus

As I worked my way through the evening’s observing list I came to an entry for the asterism ‘Hot Air Balloon’

A detail of Plate 16 of Uranographia by Johann Bode (Berlin, 1801)
A detail of Plate 16 of Uranographia by Johann Bode (Berlin, 1801) with Capricorn and Globus Aerostaticus

This asterism found its way into my personal observing catalog from the one of the Saguaro Astronomy Club observing lists. These lists are an excellent resource for those who roam the starry sky, sort of an ultimate best-of list. These lists are one of the many sources I pulled together when creating my own giant list of where to aim my telescope.

So often I find surprises in my own database among the thousands of objects that I have dumped in there over the years.

Asterisms are simply odd patterns of stars that form memorable groups, but are not necessarily real clusters or other stars that are physically associated with each other. Many of these are well known such as The Coathanger, the Diamond Ring around Polaris, or The Stargate.

When I wandered through the coordinates listed from the Balloon I found a pretty starfield, but nothing that stood out as a recognizable shape, much less a balloon. I wrote down a few comments on the area and a note to myself to look this up later. What is The Balloon?

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