Facts about Horologium Constellation

1. 06

   R Horologi, a red giant variable star in this constellation, fluctuates between magnitude 4.7 and 14.3 over approximately 13.7 months, making it one of the brightest Mira-type variables visible from Earth.

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2. 05

   Horologium Constellation's faintest cataloged stars reach magnitude 8.5, making them invisible to the naked eye without optical aid.

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3. 04

   Horologium Constellation contains TZ Horologi, a rare triple star system where the primary star is a Wolf-Rayet type star with extreme mass loss rates.

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4. 03

   In 1752, French astronomer Nicolas Louis de Lacaille cataloged Horologium Constellation during his South African observations, naming it after the pendulum clock.

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5. 02

   Located in the southern celestial hemisphere, Horologium Constellation spans approximately 249 square degrees and contains the notable binary star system Epsilon Horologi.

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6. 01

   The brightest star in Horologium Constellation, Alpha Horologi, shines at magnitude 3.86 and lies approximately 117 light-years from Earth.

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