Constellation

How to find Aquarius

A large but faint autumn constellation hiding two fine planetary nebulae.

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Hemisphere
Southern sky
Best seen
September–October
Brightest star
Sadalsuud
Abbreviation
Aqr

Sadalsuuda distant, luminous supergiant (Beta Aquarii).

Aquarius is an ancient zodiac constellation, large but made of mostly faint stars, best placed on autumn evenings. Its most identifiable piece is a small Y-shaped asterism of stars called the 'Water Jar'.

What it lacks in bright stars it makes up for in deep-sky objects for those with a telescope and a dark sky.

The Water Jar and two nebulae

The little Y of the Water Jar marks the centre of the figure. Aquarius hosts the Helix Nebula, one of the closest planetary nebulae (and a tricky, large, faint target), and the Saturn Nebula, a small bright planetary that shows a Saturn-like shape in larger scopes.

It's also home to the Aquarid meteor showers, which radiate from this region in spring and summer.

How to find it

  • From the Great Square of Pegasus, look down and to the south on autumn evenings
  • Spot the small Y-shaped Water Jar asterism near the centre
  • A dark sky is essential — Aquarius's stars are faint

Deep-sky highlights

  • Helix Nebula (NGC 7293) — a large, nearby planetary nebula for dark skies
  • Saturn Nebula (NGC 7009) — small and bright in a telescope
  • Globular cluster M2

Stella shows exactly when Aquarius is highest from your location tonight — and whether the sky is worth it.

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