Constellations · Constellation · Horologii · Hor
Constellation
Horologium
A pendulum clock, honouring Christiaan Huygens, who invented it. Lacaille put it in the sky in 1756.
- Genitive
- Horologii
- Area
- 249 square degrees · 58th of 88
- Brightest star
- · magnitude 3.85
- Naked-eye stars
- 32 brighter than magnitude 6.5
- Highest at midnight
- early November
History
Accurate clocks were the great challenge of 18th-century navigation: you cannot find your longitude at sea without knowing the time at home.