Yellow giant · Aquarius

Ancha

Also known as: θ Aquarii (θ Aqr), HIP 110003

mag 4.2190 light-years

About

Ancha (θ Aquarii) is a yellow giant of magnitude 4.2 in Aquarius, about 190 light-years away.

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How to find it

  • Ancha is in the constellation Aquarius.
  • Best evenings: around early October it is highest at about 9 pm (10 pm in summer time); a month earlier, two hours later.
  • Where on Earth: it is seen well, at least 10° up, from south of 72° N.

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When it rises and sets tonight, how high it climbs and how much the Moon gets in the way are worked out in your browser for your place.

What you will see

  • EyesVisible from the suburbs on a clear night, but lost in bright city skies.
  • Binoculars (10×50)A sharp point; binoculars bring out its colour and the fainter stars around it.
  • Telescope (6–8 inch)Still a point of light at any magnification — stars are too far away to show a disc. Low in the sky, bright stars twinkle and flash colours.

Stars look the same in any instrument: brighter and sharper, but never bigger.

Facts

Proper nameAncha
Designationθ Aquarii (θ Aqr)
Hipparcos numberHIP 110003
TypeYellow giant
Spectral typeG8III-IV
ColourPale orangeB−V colour index 0.98
Magnitude4.2The smaller the number, the brighter.
Distance190 light-yearsThe light you see left it around 1840.
Proper motion0.12″ per year across the sky
ConstellationAquarius
Right ascension (J2000)22h 16m 50.0s
Declination (J2000)−07° 47′ 00″

More in Aquarius

Sources and credits

Star data: HYG Database by David Nash, CC BY-SA 4.0. All data sources →